252717730 has 16 divisors (see below), whose sum is σ = 455087160. Its totient is φ = 101043712.

The previous prime is 252717701. The next prime is 252717779. The reversal of 252717730 is 37717252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 236144689 + 16573041 = 15367^2 + 4071^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30162 + ... + 37618.

Almost surely, 2^252717730 is an apocalyptic number.

252717730 is a deficient number, since it is larger than the sum of its proper divisors (202369430).

252717730 is a wasteful number, since it uses less digits than its factorization.

252717730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10853.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 252717730 is about 15897.0981628724. The cubic root of 252717730 is about 632.2350528372.

The spelling of 252717730 in words is "two hundred fifty-two million, seven hundred seventeen thousand, seven hundred thirty".