215734056 has 32 divisors (see below), whose sum is σ = 567722400. Its totient is φ = 68126400.

The previous prime is 215734039. The next prime is 215734073. The reversal of 215734056 is 650437512.

It is an interprime number because it is at equal distance from previous prime (215734039) and next prime (215734073).

It is a super-2 number, since 2×215734056² = 93082365836422272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236095 + ... + 237006.

It is an arithmetic number, because the mean of its divisors is an integer number (17741325).

Almost surely, 2^215734056 is an apocalyptic number.

It is an amenable number.

215734056 is an abundant number, since it is smaller than the sum of its proper divisors (351988344).

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

215734056 is a wasteful number, since it uses less digits than its factorization.

215734056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473129 (or 473125 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 215734056 is about 14687.8880714690. Note that the first 3 decimals coincide. The cubic root of 215734056 is about 599.7536544258.

The spelling of 215734056 in words is "two hundred fifteen million, seven hundred thirty-four thousand, fifty-six".