252145688 has 32 divisors (see below), whose sum is σ = 494350560. Its totient is φ = 120341760.

The previous prime is 252145687. The next prime is 252145703. The reversal of 252145688 is 886541252.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252145687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112418 + ... + 114638.

It is an arithmetic number, because the mean of its divisors is an integer number (15448455).

Almost surely, 2^252145688 is an apocalyptic number.

It is an amenable number.

252145688 is a deficient number, since it is larger than the sum of its proper divisors (242204872).

252145688 is a wasteful number, since it uses less digits than its factorization.

252145688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867 (or 2863 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 252145688 is about 15879.0959440391. The cubic root of 252145688 is about 631.7576582471.

The spelling of 252145688 in words is "two hundred fifty-two million, one hundred forty-five thousand, six hundred eighty-eight".