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28973259802 = 2139967107777
BaseRepresentation
bin11010111110111100…
…001101110000011010
32202210012022002121101
4122332330031300122
5433314123303202
621150553302014
72043661434124
oct327674156032
982705262541
1028973259802
1111318716a13
12574710490a
132969754916
14158bd3a214
15b48914887
hex6bef0dc1a

28973259802 has 16 divisors (see below), whose sum is σ = 43818223680. Its totient is φ = 14367403008.

The previous prime is 28973259761. The next prime is 28973259811. The reversal of 28973259802 is 20895237982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214938 + ... + 322714.

It is an arithmetic number, because the mean of its divisors is an integer number (2738638980).

Almost surely, 228973259802 is an apocalyptic number.

28973259802 is a deficient number, since it is larger than the sum of its proper divisors (14844963878).

28973259802 is a wasteful number, since it uses less digits than its factorization.

28973259802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108885.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 28973259802 in words is "twenty-eight billion, nine hundred seventy-three million, two hundred fifty-nine thousand, eight hundred two".

Divisors: 1 2 139 278 967 1934 107777 134413 215554 268826 14981003 29962006 104220359 208440718 14486629901 28973259802