28502439572 has 24 divisors (see below), whose sum is σ = 50612009952. Its totient is φ = 14043204000.

The previous prime is 28502439571. The next prime is 28502439577. The reversal of 28502439572 is 27593420582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28502439571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81938 + ... + 252425.

It is an arithmetic number, because the mean of its divisors is an integer number (2108833748).

Almost surely, 2^28502439572 is an apocalyptic number.

It is an amenable number.

28502439572 is a deficient number, since it is larger than the sum of its proper divisors (22109570380).

28502439572 is a wasteful number, since it uses less digits than its factorization.

28502439572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334679 (or 334677 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 28502439572 in words is "twenty-eight billion, five hundred two million, four hundred thirty-nine thousand, five hundred seventy-two".