815613472 has 24 divisors (see below), whose sum is σ = 1657539072. Its totient is φ = 394651200.

The previous prime is 815613443. The next prime is 815613479. The reversal of 815613472 is 274316518.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (815613479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410104 + ... + 412087.

It is an arithmetic number, because the mean of its divisors is an integer number (69064128).

Almost surely, 2^815613472 is an apocalyptic number.

It is an amenable number.

815613472 is an abundant number, since it is smaller than the sum of its proper divisors (841925600).

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

815613472 is a wasteful number, since it uses less digits than its factorization.

815613472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822232 (or 822224 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 815613472 is about 28558.9473195354. The cubic root of 815613472 is about 934.3181745019.

The spelling of 815613472 in words is "eight hundred fifteen million, six hundred thirteen thousand, four hundred seventy-two".