220

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220 is an integer.

Membership in core sequences

Even numbers	..., 214, 216, 218, 220, 222, 224, 226, ...	A005843
Composite numbers	..., 217, 218, 219, 220, 221, 222, 224, ...	A002808
Abundant numbers	..., 208, 210, 216, 220, 222, 224, 228, ...	A005101
Tetrahedral numbers	..., 84, 120, 165, 220, 286, 364, 455, ...	A000292

Sequences pertaining to 220

Multiples of 220	220, 440, 660, 880, 1100, 1320, 1540, 1760, 1980, 2200, 2420, 2640, ...
Divisors of 220	1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220	A018339
$3x+1$ sequence starting at 97	97, 292, 146, 73, 220, 110, 55, 166, 83, 250, 125, 376, 188, 94, 47, ...	A008873

Partitions of 220

There are 21248279009367 partitions of 220.

The Goldbach representations of 220 are 197 + 23 = 191 + 29 = 179 + 41 = 173 + 47 = 167 + 53 = 149 + 71 = 137 + 83 = 131 + 89 = 113 + 107 = 220.

Roots and powers of 220

In the table below, irrational numbers are given truncated to eight decimal places.

TABLE GOES HERE

Values for number theoretic functions with 220 as an argument

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Factorization of 220 in some quadratic integer rings

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Representation of 220 in various bases

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See also

Some integers

							$-1$
0	1	2	3	4	5	6	7	8	9
10	11	12	13	14	15	16	17	18	19
20	21	22	23	24	25	26	27	28	29
30	31	32	33	34	35	36	37	38	39
40	41	42	43	44	45	46	47	48	49
					1729