252138448 has 20 divisors (see below), whose sum is σ = 489665088. Its totient is φ = 125773280.

The previous prime is 252138431. The next prime is 252138449. The reversal of 252138448 is 844831252.

It is a happy number.

252138448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252138449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11386 + ... + 25177.

Almost surely, 2^252138448 is an apocalyptic number.

It is an amenable number.

252138448 is a deficient number, since it is larger than the sum of its proper divisors (237526640).

252138448 is a wasteful number, since it uses less digits than its factorization.

252138448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37002 (or 36996 counting only the distinct ones).

The product of its digits is 61440, while the sum is 37.

The square root of 252138448 is about 15878.8679697263. The cubic root of 252138448 is about 631.7516115190.

The spelling of 252138448 in words is "two hundred fifty-two million, one hundred thirty-eight thousand, four hundred forty-eight".