252128464 has 20 divisors (see below), whose sum is σ = 558284704. Its totient is φ = 108055008.

The previous prime is 252128441. The next prime is 252128497. The reversal of 252128464 is 464821252.

252128464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125462 + ... + 1125685.

Almost surely, 2^252128464 is an apocalyptic number.

It is an amenable number.

252128464 is an abundant number, since it is smaller than the sum of its proper divisors (306156240).

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

252128464 is a wasteful number, since it uses less digits than its factorization.

252128464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251162 (or 2251156 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 252128464 is about 15878.5535865204. The cubic root of 252128464 is about 631.7432728577.

The spelling of 252128464 in words is "two hundred fifty-two million, one hundred twenty-eight thousand, four hundred sixty-four".