215704652 has 12 divisors (see below), whose sum is σ = 377702976. Its totient is φ = 107789520.

The previous prime is 215704651. The next prime is 215704669. The reversal of 215704652 is 256407512.

215704652 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215704652² = 93056993788882208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215704651) 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, 7499 + ... + 22082.

It is an arithmetic number, because the mean of its divisors is an integer number (31475248).

Almost surely, 2^215704652 is an apocalyptic number.

It is an amenable number.

215704652 is a deficient number, since it is larger than the sum of its proper divisors (161998324).

215704652 is a wasteful number, since it uses less digits than its factorization.

215704652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31408 (or 31406 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 215704652 is about 14686.8870765728. The cubic root of 215704652 is about 599.7264048915.

The spelling of 215704652 in words is "two hundred fifteen million, seven hundred four thousand, six hundred fifty-two".