28087176520 has 64 divisors (see below), whose sum is σ = 68918976000. Its totient is φ = 10239360768.

The previous prime is 28087176461. The next prime is 28087176529. The reversal of 28087176520 is 2567178082.

It is not an unprimeable number, because it can be changed into a prime (28087176529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300780 + ... + 382939.

It is an arithmetic number, because the mean of its divisors is an integer number (1076859000).

Almost surely, 2^28087176520 is an apocalyptic number.

28087176520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28087176520 is an abundant number, since it is smaller than the sum of its proper divisors (40831799480).

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

28087176520 is a wasteful number, since it uses less digits than its factorization.

28087176520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683822 (or 683818 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 28087176520 in words is "twenty-eight billion, eighty-seven million, one hundred seventy-six thousand, five hundred twenty".