252140740 has 24 divisors (see below), whose sum is σ = 530232192. Its totient is φ = 100716000.

The previous prime is 252140737. The next prime is 252140747. The reversal of 252140740 is 47041252.

252140740 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 not an unprimeable number, because it can be changed into a prime (252140747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6627 + ... + 23413.

It is an arithmetic number, because the mean of its divisors is an integer number (22093008).

Almost surely, 2^252140740 is an apocalyptic number.

252140740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252140740 is an abundant number, since it is smaller than the sum of its proper divisors (278091452).

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

252140740 is a wasteful number, since it uses less digits than its factorization.

252140740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17547 (or 17545 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 252140740 is about 15878.9401409540. The cubic root of 252140740 is about 631.7535257720.

Adding to 252140740 its reverse (47041252), we get a palindrome (299181992).

The spelling of 252140740 in words is "two hundred fifty-two million, one hundred forty thousand, seven hundred forty".