252213660 has 36 divisors (see below), whose sum is σ = 765048648. Its totient is φ = 67256928.

The previous prime is 252213617. The next prime is 252213679. The reversal of 252213660 is 66312252.

252213660 is a `hidden beast` number, since 2 + 522 + 136 + 6 + 0 = 666.

252213660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×252213660² = 127223460581191200, which contains 22 as substring.

It is a congruent number.

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, 700414 + ... + 700773.

Almost surely, 2^252213660 is an apocalyptic number.

252213660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252213660 is an abundant number, since it is smaller than the sum of its proper divisors (512834988).

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

252213660 is a wasteful number, since it uses less digits than its factorization.

252213660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401202 (or 1401197 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 252213660 is about 15881.2360979868. The cubic root of 252213660 is about 631.8144216918.

The spelling of 252213660 in words is "two hundred fifty-two million, two hundred thirteen thousand, six hundred sixty".