252123630 has 32 divisors (see below), whose sum is σ = 660106368. Its totient is φ = 61120800.

The previous prime is 252123611. The next prime is 252123653. The reversal of 252123630 is 36321252.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 252123630.

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, 381676 + ... + 382335.

It is an arithmetic number, because the mean of its divisors is an integer number (20628324).

Almost surely, 2^252123630 is an apocalyptic number.

252123630 is an abundant number, since it is smaller than the sum of its proper divisors (407982738).

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

252123630 is a wasteful number, since it uses less digits than its factorization.

252123630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764032.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 252123630 is about 15878.4013678960. The cubic root of 252123630 is about 631.7392354100.

Adding to 252123630 its reverse (36321252), we get a palindrome (288444882).

The spelling of 252123630 in words is "two hundred fifty-two million, one hundred twenty-three thousand, six hundred thirty".