28527081688 has 64 divisors (see below), whose sum is σ = 66565728000. Its totient is φ = 11183018112.

The previous prime is 28527081641. The next prime is 28527081703. The reversal of 28527081688 is 88618072582.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431406 + ... + 493117.

It is an arithmetic number, because the mean of its divisors is an integer number (1040089500).

Almost surely, 2^28527081688 is an apocalyptic number.

28527081688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28527081688 is an abundant number, since it is smaller than the sum of its proper divisors (38038646312).

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

28527081688 is a wasteful number, since it uses less digits than its factorization.

28527081688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924584 (or 924580 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 28527081688 in words is "twenty-eight billion, five hundred twenty-seven million, eighty-one thousand, six hundred eighty-eight".