87997328 has 20 divisors (see below), whose sum is σ = 170643840. Its totient is φ = 43960224.

The previous prime is 87997309. The next prime is 87997369. The reversal of 87997328 is 82379978.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 87997328.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28601 + ... + 31527.

It is an arithmetic number, because the mean of its divisors is an integer number (8532192).

Almost surely, 2^87997328 is an apocalyptic number.

It is an amenable number.

87997328 is a deficient number, since it is larger than the sum of its proper divisors (82646512).

87997328 is a wasteful number, since it uses less digits than its factorization.

87997328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814 (or 4808 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 53.

The square root of 87997328 is about 9380.6891004872. The cubic root of 87997328 is about 444.7915161934.

The spelling of 87997328 in words is "eighty-seven million, nine hundred ninety-seven thousand, three hundred twenty-eight".