252765390 has 32 divisors (see below), whose sum is σ = 609257376. Its totient is φ = 67112960.

The previous prime is 252765361. The next prime is 252765407. The reversal of 252765390 is 93567252.

252765390 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11091 + ... + 25070.

It is an arithmetic number, because the mean of its divisors is an integer number (19039293).

Almost surely, 2^252765390 is an apocalyptic number.

252765390 is an abundant number, since it is smaller than the sum of its proper divisors (356491986).

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

252765390 is a wasteful number, since it uses less digits than its factorization.

252765390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36404.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 252765390 is about 15898.5971079212. The cubic root of 252765390 is about 632.2747947113.

The spelling of 252765390 in words is "two hundred fifty-two million, seven hundred sixty-five thousand, three hundred ninety".