252657472 has 28 divisors (see below), whose sum is σ = 507011940. Its totient is φ = 124906496.

The previous prime is 252657407. The next prime is 252657479. The reversal of 252657472 is 274756252.

It can be written as a sum of positive squares in 2 ways, for example, as 152176896 + 100480576 = 12336^2 + 10024^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252657479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16483 + ... + 27874.

Almost surely, 2^252657472 is an apocalyptic number.

It is an amenable number.

252657472 is an abundant number, since it is smaller than the sum of its proper divisors (254354468).

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

252657472 is an equidigital number, since it uses as much as digits as its factorization.

252657472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44458 (or 44448 counting only the distinct ones).

The product of its digits is 235200, while the sum is 40.

The square root of 252657472 is about 15895.2027983288. The cubic root of 252657472 is about 632.1847988137.

The spelling of 252657472 in words is "two hundred fifty-two million, six hundred fifty-seven thousand, four hundred seventy-two".