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28318326008 = 237505684393
BaseRepresentation
bin11010010111111001…
…110101110011111000
32201002112221000100012
4122113321311303320
5430443442413013
621002000001052
72021516541140
oct322771656370
981075830305
1028318326008
1111011a58515
1255a3900188
132893b6402b
141528d73920
15b0b1951a8
hex697e75cf8

28318326008 has 16 divisors (see below), whose sum is σ = 60682127280. Its totient is φ = 12136425408.

The previous prime is 28318325989. The next prime is 28318326037. The reversal of 28318326008 is 80062381382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252842141 + ... + 252842252.

It is an arithmetic number, because the mean of its divisors is an integer number (3792632955).

Almost surely, 228318326008 is an apocalyptic number.

28318326008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28318326008 is an abundant number, since it is smaller than the sum of its proper divisors (32363801272).

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

28318326008 is a wasteful number, since it uses less digits than its factorization.

28318326008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505684406 (or 505684402 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 28318326008 in words is "twenty-eight billion, three hundred eighteen million, three hundred twenty-six thousand, eight".

Divisors: 1 2 4 7 8 14 28 56 505684393 1011368786 2022737572 3539790751 4045475144 7079581502 14159163004 28318326008