252191944 has 32 divisors (see below), whose sum is σ = 489162240. Its totient is φ = 121766400.

The previous prime is 252191911. The next prime is 252191971. The reversal of 252191944 is 449191252.

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, 166149 + ... + 167659.

It is an arithmetic number, because the mean of its divisors is an integer number (15286320).

Almost surely, 2^252191944 is an apocalyptic number.

It is an amenable number.

252191944 is a deficient number, since it is larger than the sum of its proper divisors (236970296).

252191944 is a wasteful number, since it uses less digits than its factorization.

252191944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2217 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 252191944 is about 15880.5523833398. The cubic root of 252191944 is about 631.7962877602.

The spelling of 252191944 in words is "two hundred fifty-two million, one hundred ninety-one thousand, nine hundred forty-four".