252184840 has 32 divisors (see below), whose sum is σ = 568551960. Its totient is φ = 100672000.

The previous prime is 252184837. The next prime is 252184871. The reversal of 252184840 is 48481252.

It can be written as a sum of positive squares in 4 ways, for example, as 243172836 + 9012004 = 15594^2 + 3002^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252184796 and 252184805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14790 + ... + 26890.

Almost surely, 2^252184840 is an apocalyptic number.

252184840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252184840 is an abundant number, since it is smaller than the sum of its proper divisors (316367120).

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

252184840 is a wasteful number, since it uses less digits than its factorization.

252184840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12633 (or 12629 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 252184840 is about 15880.3287119631. The cubic root of 252184840 is about 631.7903553436.

The spelling of 252184840 in words is "two hundred fifty-two million, one hundred eighty-four thousand, eight hundred forty".