252704440 has 16 divisors (see below), whose sum is σ = 568585080. Its totient is φ = 101081760.

The previous prime is 252704437. The next prime is 252704453. The reversal of 252704440 is 44407252.

It is a happy number.

It is a super-3 number, since 3×252704440³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252704399 and 252704408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158766 + ... + 3158845.

Almost surely, 2^252704440 is an apocalyptic number.

252704440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252704440 is an abundant number, since it is smaller than the sum of its proper divisors (315880640).

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

252704440 is a wasteful number, since it uses less digits than its factorization.

252704440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317622 (or 6317618 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 252704440 is about 15896.6801565610. The cubic root of 252704440 is about 632.2239699172.

The spelling of 252704440 in words is "two hundred fifty-two million, seven hundred four thousand, four hundred forty".