28112926504 has 32 divisors (see below), whose sum is σ = 56871528840. Its totient is φ = 12951187200.

The previous prime is 28112926493. The next prime is 28112926561. The reversal of 28112926504 is 40562921182.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25712122500 + 2400804004 = 160350^2 + 48998^2 .

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, 193567 + ... + 306094.

Almost surely, 2^28112926504 is an apocalyptic number.

It is an amenable number.

28112926504 is an abundant number, since it is smaller than the sum of its proper divisors (28758602336).

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

28112926504 is a wasteful number, since it uses less digits than its factorization.

28112926504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500221 (or 500217 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 28112926504 in words is "twenty-eight billion, one hundred twelve million, nine hundred twenty-six thousand, five hundred four".