252139318 has 8 divisors (see below), whose sum is σ = 383536080. Its totient is φ = 124293960.

The previous prime is 252139301. The next prime is 252139339. The reversal of 252139318 is 813931252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887673 + ... + 887956.

It is an arithmetic number, because the mean of its divisors is an integer number (47942010).

Almost surely, 2^252139318 is an apocalyptic number.

252139318 is a deficient number, since it is larger than the sum of its proper divisors (131396762).

252139318 is a wasteful number, since it uses less digits than its factorization.

252139318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775702.

The product of its digits is 12960, while the sum is 34.

The square root of 252139318 is about 15878.8953646027. The cubic root of 252139318 is about 631.7523381347.

The spelling of 252139318 in words is "two hundred fifty-two million, one hundred thirty-nine thousand, three hundred eighteen".