252232740 has 144 divisors (see below), whose sum is σ = 836559360. Its totient is φ = 61240320.

The previous prime is 252232681. The next prime is 252232751. The reversal of 252232740 is 47232252.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93531 + ... + 96189.

It is an arithmetic number, because the mean of its divisors is an integer number (5809440).

Almost surely, 2^252232740 is an apocalyptic number.

252232740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252232740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418279680).

252232740 is an abundant number, since it is smaller than the sum of its proper divisors (584326620).

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

252232740 is a wasteful number, since it uses less digits than its factorization.

252232740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2717 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 252232740 is about 15881.8367955347. The cubic root of 252232740 is about 631.8303535743.

Adding to 252232740 its reverse (47232252), we get a palindrome (299464992).

The spelling of 252232740 in words is "two hundred fifty-two million, two hundred thirty-two thousand, seven hundred forty".