864215232 has 56 divisors (see below), whose sum is σ = 2290187952. Its totient is φ = 287616000.

The previous prime is 864215221. The next prime is 864215239. The reversal of 864215232 is 232512468.

It is a junction number, because it is equal to n+sod(n) for n = 864215193 and 864215202.

It is not an unprimeable number, because it can be changed into a prime (864215239) 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 7 ways as a sum of consecutive naturals, for example, 131382 + ... + 137802.

Almost surely, 2^864215232 is an apocalyptic number.

It is an amenable number.

864215232 is an abundant number, since it is smaller than the sum of its proper divisors (1425972720).

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

864215232 is a wasteful number, since it uses less digits than its factorization.

864215232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137 (or 7127 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 864215232 is about 29397.5378560858. The cubic root of 864215232 is about 952.5197124626.

The spelling of 864215232 in words is "eight hundred sixty-four million, two hundred fifteen thousand, two hundred thirty-two".