28631751824 has 40 divisors (see below), whose sum is σ = 59755467072. Its totient is φ = 13211510400.

The previous prime is 28631751767. The next prime is 28631751857. The reversal of 28631751824 is 42815713682.

It is a super-2 number, since 2×28631751824² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015907 + ... + 1043709.

Almost surely, 2^28631751824 is an apocalyptic number.

It is an amenable number.

28631751824 is an abundant number, since it is smaller than the sum of its proper divisors (31123715248).

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

28631751824 is a wasteful number, since it uses less digits than its factorization.

28631751824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32775 (or 32769 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The spelling of 28631751824 in words is "twenty-eight billion, six hundred thirty-one million, seven hundred fifty-one thousand, eight hundred twenty-four".