252438312 has 128 divisors (see below), whose sum is σ = 751242240. Its totient is φ = 69189120.

The previous prime is 252438293. The next prime is 252438371. The reversal of 252438312 is 213834252.

It is a self number, because there is not a number n which added to its sum of digits gives 252438312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461223 + ... + 461769.

It is an arithmetic number, because the mean of its divisors is an integer number (5869080).

Almost surely, 2^252438312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252438312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375621120).

252438312 is an abundant number, since it is smaller than the sum of its proper divisors (498803928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252438312 is a wasteful number, since it uses less digits than its factorization.

252438312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 667 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 252438312 is about 15888.3073988389. The cubic root of 252438312 is about 632.0019561441.

The spelling of 252438312 in words is "two hundred fifty-two million, four hundred thirty-eight thousand, three hundred twelve".