28571817904 has 60 divisors (see below), whose sum is σ = 63512581264. Its totient is φ = 12197469312.

The previous prime is 28571817863. The next prime is 28571817943. The reversal of 28571817904 is 40971817582.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 34548339 + ... + 34549165.

Almost surely, 2^28571817904 is an apocalyptic number.

It is an amenable number.

28571817904 is an abundant number, since it is smaller than the sum of its proper divisors (34940763360).

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

28571817904 is an frugal number, since it uses more digits than its factorization.

28571817904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 28571817904 in words is "twenty-eight billion, five hundred seventy-one million, eight hundred seventeen thousand, nine hundred four".