28560317516 has 24 divisors (see below), whose sum is σ = 50587614000. Its totient is φ = 14107002624.

The previous prime is 28560317497. The next prime is 28560317581. The reversal of 28560317516 is 61571306582.

It is a super-2 number, since 2×28560317516² (a number of 22 digits) contains 22 as substring.

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, 366395 + ... + 437453.

It is an arithmetic number, because the mean of its divisors is an integer number (2107817250).

Almost surely, 2^28560317516 is an apocalyptic number.

It is an amenable number.

28560317516 is a deficient number, since it is larger than the sum of its proper divisors (22027296484).

28560317516 is a wasteful number, since it uses less digits than its factorization.

28560317516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72281 (or 72279 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 28560317516 in words is "twenty-eight billion, five hundred sixty million, three hundred seventeen thousand, five hundred sixteen".