252218364 has 24 divisors (see below), whose sum is σ = 588844368. Its totient is φ = 84024960.

The previous prime is 252218363. The next prime is 252218377. The reversal of 252218364 is 463812252.

It is a super-2 number, since 2×252218364² = 127228206277672992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252218363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20784 + ... + 30600.

It is an arithmetic number, because the mean of its divisors is an integer number (24535182).

Almost surely, 2^252218364 is an apocalyptic number.

It is an amenable number.

252218364 is an abundant number, since it is smaller than the sum of its proper divisors (336626004).

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

252218364 is a wasteful number, since it uses less digits than its factorization.

252218364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11965 (or 11963 counting only the distinct ones).

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

The square root of 252218364 is about 15881.3841965995. The cubic root of 252218364 is about 631.8183496268.

The spelling of 252218364 in words is "two hundred fifty-two million, two hundred eighteen thousand, three hundred sixty-four".