252920940 has 48 divisors (see below), whose sum is σ = 731028480. Its totient is φ = 65269440.

The previous prime is 252920939. The next prime is 252920953. The reversal of 252920940 is 49029252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66130 + ... + 69849.

It is an arithmetic number, because the mean of its divisors is an integer number (15229760).

Almost surely, 2^252920940 is an apocalyptic number.

252920940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252920940 is an abundant number, since it is smaller than the sum of its proper divisors (478107540).

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

252920940 is a wasteful number, since it uses less digits than its factorization.

252920940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136022 (or 136020 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 252920940 is about 15903.4882965971. The cubic root of 252920940 is about 632.4044672329.

The spelling of 252920940 in words is "two hundred fifty-two million, nine hundred twenty thousand, nine hundred forty".