28959723124 has 6 divisors (see below), whose sum is σ = 50679515474. Its totient is φ = 14479861560.

The previous prime is 28959723053. The next prime is 28959723197. The reversal of 28959723124 is 42132795982.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16811715600 + 12148007524 = 129660^2 + 110218^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3619965387 + ... + 3619965394.

Almost surely, 2^28959723124 is an apocalyptic number.

It is an amenable number.

28959723124 is a deficient number, since it is larger than the sum of its proper divisors (21719792350).

28959723124 is a wasteful number, since it uses less digits than its factorization.

28959723124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239930785 (or 7239930783 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The spelling of 28959723124 in words is "twenty-eight billion, nine hundred fifty-nine million, seven hundred twenty-three thousand, one hundred twenty-four".