28582620864 has 112 divisors (see below), whose sum is σ = 89408812800. Its totient is φ = 7884850176.

The previous prime is 28582620839. The next prime is 28582620877. The reversal of 28582620864 is 46802628582.

It is a tau number, because it is divible by the number of its divisors (112).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327694 + ... + 405645.

Almost surely, 2^28582620864 is an apocalyptic number.

28582620864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28582620864 is an abundant number, since it is smaller than the sum of its proper divisors (60826191936).

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

28582620864 is a wasteful number, since it uses less digits than its factorization.

28582620864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733390 (or 733380 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 51.

The spelling of 28582620864 in words is "twenty-eight billion, five hundred eighty-two million, six hundred twenty thousand, eight hundred sixty-four".