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28672868214 = 233691176831
BaseRepresentation
bin11010101101000010…
…010011111101110110
32202000021001121211000
4122231002103331312
5432210223240324
621101103024130
72033353233654
oct325502237566
982007047730
1028672868214
11111840a5301
12568259b046
13291c44a813
1415600a3dd4
15b2c3799c9
hex6ad093f76

28672868214 has 32 divisors (see below), whose sum is σ = 63727534080. Its totient is φ = 9556115400.

The previous prime is 28672868201. The next prime is 28672868249. The reversal of 28672868214 is 41286827682.

28672868214 is a `hidden beast` number, since 286 + 7 + 286 + 82 + 1 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334779 + ... + 411609.

It is an arithmetic number, because the mean of its divisors is an integer number (1991485440).

Almost surely, 228672868214 is an apocalyptic number.

28672868214 is an abundant number, since it is smaller than the sum of its proper divisors (35054665866).

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

28672868214 is a wasteful number, since it uses less digits than its factorization.

28672868214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83753 (or 83747 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The spelling of 28672868214 in words is "twenty-eight billion, six hundred seventy-two million, eight hundred sixty-eight thousand, two hundred fourteen".

Divisors: 1 2 3 6 9 18 27 54 6911 13822 20733 41466 62199 76831 124398 153662 186597 230493 373194 460986 691479 1382958 2074437 4148874 530979041 1061958082 1592937123 3185874246 4778811369 9557622738 14336434107 28672868214