252437644 has 6 divisors (see below), whose sum is σ = 441765884. Its totient is φ = 126218820.

The previous prime is 252437597. The next prime is 252437651. The reversal of 252437644 is 446734252.

252437644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31554702 + ... + 31554709.

Almost surely, 2^252437644 is an apocalyptic number.

It is an amenable number.

252437644 is a deficient number, since it is larger than the sum of its proper divisors (189328240).

252437644 is a wasteful number, since it uses less digits than its factorization.

252437644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63109415 (or 63109413 counting only the distinct ones).

The product of its digits is 161280, while the sum is 37.

The square root of 252437644 is about 15888.2863770767. The cubic root of 252437644 is about 632.0013986777.

The spelling of 252437644 in words is "two hundred fifty-two million, four hundred thirty-seven thousand, six hundred forty-four".