28568574873 has 24 divisors (see below), whose sum is σ = 43765800000. Its totient is φ = 17918984160.

The previous prime is 28568574863. The next prime is 28568574887. The reversal of 28568574873 is 37847586582.

28568574873 is a `hidden beast` number, since 2 + 8 + 56 + 8 + 574 + 8 + 7 + 3 = 666.

It is not a de Polignac number, because 28568574873 - 2⁵ = 28568574841 is a prime.

It is a super-2 number, since 2×28568574873² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28568574873.

It is not an unprimeable number, because it can be changed into a prime (28568574833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1118623 + ... + 1143876.

It is an arithmetic number, because the mean of its divisors is an integer number (1823575000).

Almost surely, 2^28568574873 is an apocalyptic number.

28568574873 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28568574873 is a deficient number, since it is larger than the sum of its proper divisors (15197225127).

28568574873 is a wasteful number, since it uses less digits than its factorization.

28568574873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262589 (or 2262586 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 63.

The spelling of 28568574873 in words is "twenty-eight billion, five hundred sixty-eight million, five hundred seventy-four thousand, eight hundred seventy-three".