28337455872 has 108 divisors (see below), whose sum is σ = 89131575624. Its totient is φ = 8587100160.

The previous prime is 28337455841. The next prime is 28337455903. The reversal of 28337455872 is 27855473382.

28337455872 is a `hidden beast` number, since 2 + 83 + 3 + 7 + 4 + 558 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (28337455841) and next prime (28337455903).

It is a super-2 number, since 2×28337455872² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 533713 + ... + 584400.

Almost surely, 2^28337455872 is an apocalyptic number.

28337455872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28337455872 is an abundant number, since it is smaller than the sum of its proper divisors (60794119752).

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

28337455872 is a wasteful number, since it uses less digits than its factorization.

28337455872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118146 (or 1118129 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 28337455872 in words is "twenty-eight billion, three hundred thirty-seven million, four hundred fifty-five thousand, eight hundred seventy-two".