252442380 has 24 divisors (see below), whose sum is σ = 706838832. Its totient is φ = 67317952.

The previous prime is 252442373. The next prime is 252442381. The reversal of 252442380 is 83244252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (252442381) 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, 2103627 + ... + 2103746.

It is an arithmetic number, because the mean of its divisors is an integer number (29451618).

Almost surely, 2^252442380 is an apocalyptic number.

252442380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252442380 is an abundant number, since it is smaller than the sum of its proper divisors (454396452).

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

252442380 is a wasteful number, since it uses less digits than its factorization.

252442380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207385 (or 4207383 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 252442380 is about 15888.4354169943. The cubic root of 252442380 is about 632.0053509935.

The spelling of 252442380 in words is "two hundred fifty-two million, four hundred forty-two thousand, three hundred eighty".