28573707908 has 12 divisors (see below), whose sum is σ = 50016294300. Its totient is φ = 14283338112.

The previous prime is 28573707889. The next prime is 28573707913. The reversal of 28573707908 is 80970737582.

It can be written as a sum of positive squares in 2 ways, for example, as 16734527044 + 11839180864 = 129362^2 + 108808^2 .

It is a super-2 number, since 2×28573707908² (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 3 ways as a sum of consecutive naturals, for example, 860633 + ... + 893216.

It is an arithmetic number, because the mean of its divisors is an integer number (4168024525).

Almost surely, 2^28573707908 is an apocalyptic number.

It is an amenable number.

28573707908 is a deficient number, since it is larger than the sum of its proper divisors (21442586392).

28573707908 is a wasteful number, since it uses less digits than its factorization.

28573707908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757926 (or 1757924 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 28573707908 in words is "twenty-eight billion, five hundred seventy-three million, seven hundred seven thousand, nine hundred eight".