28657472858 has 16 divisors (see below), whose sum is σ = 49485691584. Its totient is φ = 12192125280.

The previous prime is 28657472839. The next prime is 28657472891. The reversal of 28657472858 is 85827475682.

It is a self number, because there is not a number n which added to its sum of digits gives 28657472858.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7468748 + ... + 7472583.

It is an arithmetic number, because the mean of its divisors is an integer number (3092855724).

Almost surely, 2^28657472858 is an apocalyptic number.

28657472858 is a deficient number, since it is larger than the sum of its proper divisors (20828218726).

28657472858 is a wasteful number, since it uses less digits than its factorization.

28657472858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14941477.

The product of its digits is 60211200, while the sum is 62.

The spelling of 28657472858 in words is "twenty-eight billion, six hundred fifty-seven million, four hundred seventy-two thousand, eight hundred fifty-eight".