252343140 has 72 divisors (see below), whose sum is σ = 821927232. Its totient is φ = 57677760.

The previous prime is 252343139. The next prime is 252343171. The reversal of 252343140 is 41343252.

252343140 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 252343140.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39976 + ... + 45855.

It is an arithmetic number, because the mean of its divisors is an integer number (11415656).

Almost surely, 2^252343140 is an apocalyptic number.

252343140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252343140 is an abundant number, since it is smaller than the sum of its proper divisors (569584092).

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

252343140 is a wasteful number, since it uses less digits than its factorization.

252343140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85857 (or 85848 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 252343140 is about 15885.3120838087. The cubic root of 252343140 is about 631.9225222814.

Adding to 252343140 its reverse (41343252), we get a palindrome (293686392).

The spelling of 252343140 in words is "two hundred fifty-two million, three hundred forty-three thousand, one hundred forty".