87694728 has 64 divisors (see below), whose sum is σ = 251769600. Its totient is φ = 25174080.

The previous prime is 87694703. The next prime is 87694741. The reversal of 87694728 is 82749678.

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, 3726 + ... + 13757.

It is an arithmetic number, because the mean of its divisors is an integer number (3933900).

Almost surely, 2^87694728 is an apocalyptic number.

87694728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

87694728 is an abundant number, since it is smaller than the sum of its proper divisors (164074872).

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

87694728 is a wasteful number, since it uses less digits than its factorization.

87694728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17522 (or 17518 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 87694728 is about 9364.5463317771. The cubic root of 87694728 is about 444.2810897630.

The spelling of 87694728 in words is "eighty-seven million, six hundred ninety-four thousand, seven hundred twenty-eight".