252215790 has 32 divisors (see below), whose sum is σ = 609184800. Its totient is φ = 66827904.

The previous prime is 252215779. The next prime is 252215797. The reversal of 252215790 is 97512252.

It is a happy number.

It is a super-2 number, since 2×252215790² = 127225609450648200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252215797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22065 + ... + 31484.

It is an arithmetic number, because the mean of its divisors is an integer number (19037025).

Almost surely, 2^252215790 is an apocalyptic number.

252215790 is an abundant number, since it is smaller than the sum of its proper divisors (356969010).

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

252215790 is a wasteful number, since it uses less digits than its factorization.

252215790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53716.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 252215790 is about 15881.3031581165. The cubic root of 252215790 is about 631.8162002908.

The spelling of 252215790 in words is "two hundred fifty-two million, two hundred fifteen thousand, seven hundred ninety".