815323672 has 32 divisors (see below), whose sum is σ = 1641474720. Its totient is φ = 378273280.

The previous prime is 815323643. The next prime is 815323673. The reversal of 815323672 is 276323518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815323673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32563 + ... + 51874.

It is an arithmetic number, because the mean of its divisors is an integer number (51296085).

Almost surely, 2^815323672 is an apocalyptic number.

It is an amenable number.

815323672 is an abundant number, since it is smaller than the sum of its proper divisors (826151048).

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

815323672 is a wasteful number, since it uses less digits than its factorization.

815323672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84531 (or 84527 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 815323672 is about 28553.8731523413. The cubic root of 815323672 is about 934.2075021913.

The spelling of 815323672 in words is "eight hundred fifteen million, three hundred twenty-three thousand, six hundred seventy-two".