28316085580 has 24 divisors (see below), whose sum is σ = 59533201728. Its totient is φ = 11313211008.

The previous prime is 28316085541. The next prime is 28316085599. The reversal of 28316085580 is 8558061382.

It is a self number, because there is not a number n which added to its sum of digits gives 28316085580.

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, 808884 + ... + 843163.

It is an arithmetic number, because the mean of its divisors is an integer number (2480550072).

Almost surely, 2^28316085580 is an apocalyptic number.

28316085580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28316085580 is an abundant number, since it is smaller than the sum of its proper divisors (31217116148).

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

28316085580 is a wasteful number, since it uses less digits than its factorization.

28316085580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652913 (or 1652911 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 28316085580 in words is "twenty-eight billion, three hundred sixteen million, eighty-five thousand, five hundred eighty".