215622152 has 16 divisors (see below), whose sum is σ = 428073660. Its totient is φ = 101469184.

The previous prime is 215622151. The next prime is 215622181. The reversal of 215622152 is 251226512.

It can be written as a sum of positive squares in 2 ways, for example, as 171452836 + 44169316 = 13094^2 + 6646^2 .

It is a super-2 number, since 2×215622152² = 92985824866222208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215622151) 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, 792593 + ... + 792864.

Almost surely, 2^215622152 is an apocalyptic number.

It is an amenable number.

215622152 is a deficient number, since it is larger than the sum of its proper divisors (212451508).

215622152 is a wasteful number, since it uses less digits than its factorization.

215622152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585480 (or 1585476 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 215622152 is about 14684.0781801242. The cubic root of 215622152 is about 599.6499365398.

Adding to 215622152 its reverse (251226512), we get a palindrome (466848664).

The spelling of 215622152 in words is "two hundred fifteen million, six hundred twenty-two thousand, one hundred fifty-two".