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28714647368 = 23111747408389
BaseRepresentation
bin11010101111100001…
…101011111101001000
32202010011200020001002
4122233201223331020
5432301422203433
621105154314132
72034401322041
oct325741537510
982104606032
1028714647368
11111a5740630
125694588948
132927cb8104
14156585b8c8
15b30d7d9e8
hex6af86bf48

28714647368 has 64 divisors (see below), whose sum is σ = 63512812800. Its totient is φ = 12022942720.

The previous prime is 28714647361. The next prime is 28714647397. The reversal of 28714647368 is 86374641782.

It is not an unprimeable number, because it can be changed into a prime (28714647361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133883 + ... + 274506.

It is an arithmetic number, because the mean of its divisors is an integer number (992387700).

Almost surely, 228714647368 is an apocalyptic number.

It is an amenable number.

28714647368 is an abundant number, since it is smaller than the sum of its proper divisors (34798165432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28714647368 is a wasteful number, since it uses less digits than its factorization.

28714647368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408470 (or 408466 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 56.

The spelling of 28714647368 in words is "twenty-eight billion, seven hundred fourteen million, six hundred forty-seven thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 11 17 22 34 44 47 68 88 94 136 187 188 374 376 517 748 799 1034 1496 1598 2068 3196 4136 6392 8789 17578 35156 70312 408389 816778 1633556 3267112 4492279 6942613 8984558 13885226 17969116 19194283 27770452 35938232 38388566 55540904 76368743 76777132 152737486 153554264 211137113 305474972 326302811 422274226 610949944 652605622 844548452 1305211244 1689096904 2610422488 3589330921 7178661842 14357323684 28714647368