28712535504 has 40 divisors (see below), whose sum is σ = 75983178432. Its totient is φ = 9337409280.

The previous prime is 28712535497. The next prime is 28712535559. The reversal of 28712535504 is 40553521782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7292884 + ... + 7296819.

Almost surely, 2^28712535504 is an apocalyptic number.

28712535504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28712535504 is an abundant number, since it is smaller than the sum of its proper divisors (47270642928).

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

28712535504 is a wasteful number, since it uses less digits than its factorization.

28712535504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14589755 (or 14589749 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 28712535504 in words is "twenty-eight billion, seven hundred twelve million, five hundred thirty-five thousand, five hundred four".