252631830 has 64 divisors (see below), whose sum is σ = 670560768. Its totient is φ = 60399360.

The previous prime is 252631801. The next prime is 252631861. The reversal of 252631830 is 38136252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 18847 + ... + 29333.

It is an arithmetic number, because the mean of its divisors is an integer number (10477512).

Almost surely, 2^252631830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252631830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335280384).

252631830 is an abundant number, since it is smaller than the sum of its proper divisors (417928938).

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

252631830 is a wasteful number, since it uses less digits than its factorization.

252631830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10581.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 252631830 is about 15894.3961823027. The cubic root of 252631830 is about 632.1634114510.

The spelling of 252631830 in words is "two hundred fifty-two million, six hundred thirty-one thousand, eight hundred thirty".