815332132 has 12 divisors (see below), whose sum is σ = 1427328000. Its totient is φ = 407524136.

The previous prime is 815332117. The next prime is 815332139. The reversal of 815332132 is 231233518.

It is a self number, because there is not a number n which added to its sum of digits gives 815332132.

It is not an unprimeable number, because it can be changed into a prime (815332139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21988 + ... + 45979.

It is an arithmetic number, because the mean of its divisors is an integer number (118944000).

Almost surely, 2^815332132 is an apocalyptic number.

It is an amenable number.

815332132 is a deficient number, since it is larger than the sum of its proper divisors (611995868).

815332132 is a wasteful number, since it uses less digits than its factorization.

815332132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70970 (or 70968 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 815332132 is about 28554.0212929808. The cubic root of 815332132 is about 934.2107333695.

The spelling of 815332132 in words is "eight hundred fifteen million, three hundred thirty-two thousand, one hundred thirty-two".