815949888 has 56 divisors (see below), whose sum is σ = 2324941248. Its totient is φ = 251060736.

The previous prime is 815949839. The next prime is 815949913. The reversal of 815949888 is 888949518.

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, 160956 + ... + 165947.

It is an arithmetic number, because the mean of its divisors is an integer number (41516808).

Almost surely, 2^815949888 is an apocalyptic number.

It is an amenable number.

815949888 is an abundant number, since it is smaller than the sum of its proper divisors (1508991360).

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

815949888 is a wasteful number, since it uses less digits than its factorization.

815949888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326931 (or 326921 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 60.

The square root of 815949888 is about 28564.8365652597. The cubic root of 815949888 is about 934.4466162160.

The spelling of 815949888 in words is "eight hundred fifteen million, nine hundred forty-nine thousand, eight hundred eighty-eight".