252691320 has 64 divisors (see below), whose sum is σ = 866373120. Its totient is φ = 57757824.

The previous prime is 252691319. The next prime is 252691331. The reversal of 252691320 is 23196252.

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 15 ways as a sum of consecutive naturals, for example, 149572 + ... + 151251.

It is an arithmetic number, because the mean of its divisors is an integer number (13537080).

Almost surely, 2^252691320 is an apocalyptic number.

252691320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252691320 is an abundant number, since it is smaller than the sum of its proper divisors (613681800).

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

252691320 is a wasteful number, since it uses less digits than its factorization.

252691320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300844 (or 300840 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 252691320 is about 15896.2674864259. The cubic root of 252691320 is about 632.2130283840.

The spelling of 252691320 in words is "two hundred fifty-two million, six hundred ninety-one thousand, three hundred twenty".