252216684 has 36 divisors (see below), whose sum is σ = 644129304. Its totient is φ = 83204352.

The previous prime is 252216677. The next prime is 252216721. The reversal of 252216684 is 486612252.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×252216684² = 127226511375911712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32622 + ... + 39605.

Almost surely, 2^252216684 is an apocalyptic number.

It is an amenable number.

252216684 is an abundant number, since it is smaller than the sum of its proper divisors (391912620).

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

252216684 is a wasteful number, since it uses less digits than its factorization.

252216684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72334 (or 72329 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 252216684 is about 15881.3313043964. The cubic root of 252216684 is about 631.8169467984.

The spelling of 252216684 in words is "two hundred fifty-two million, two hundred sixteen thousand, six hundred eighty-four".