28725762916 has 6 divisors (see below), whose sum is σ = 50270085110. Its totient is φ = 14362881456.

The previous prime is 28725762911. The next prime is 28725762941. The reversal of 28725762916 is 61926752782.

It can be written as a sum of positive squares in only one way, i.e., 25633290816 + 3092472100 = 160104^2 + 55610^2 .

It is not an unprimeable number, because it can be changed into a prime (28725762911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3590720361 + ... + 3590720368.

Almost surely, 2^28725762916 is an apocalyptic number.

It is an amenable number.

28725762916 is a deficient number, since it is larger than the sum of its proper divisors (21544322194).

28725762916 is a wasteful number, since it uses less digits than its factorization.

28725762916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7181440733 (or 7181440731 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The spelling of 28725762916 in words is "twenty-eight billion, seven hundred twenty-five million, seven hundred sixty-two thousand, nine hundred sixteen".