815372988 has 24 divisors (see below), whose sum is σ = 1938435408. Its totient is φ = 266662656.

The previous prime is 815372941. The next prime is 815373001. The reversal of 815372988 is 889273518.

815372988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 815372988.

It is a congruent number.

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, 640381 + ... + 641652.

It is an arithmetic number, because the mean of its divisors is an integer number (80768142).

Almost surely, 2^815372988 is an apocalyptic number.

It is an amenable number.

815372988 is an abundant number, since it is smaller than the sum of its proper divisors (1123062420).

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

815372988 is a wasteful number, since it uses less digits than its factorization.

815372988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282093 (or 1282091 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The square root of 815372988 is about 28554.7366998892. The cubic root of 815372988 is about 934.2263374302.

The spelling of 815372988 in words is "eight hundred fifteen million, three hundred seventy-two thousand, nine hundred eighty-eight".