252918986 has 8 divisors (see below), whose sum is σ = 379736580. Its totient is φ = 126340128.

The previous prime is 252918961. The next prime is 252918997. The reversal of 252918986 is 689819252.

It can be written as a sum of positive squares in 2 ways, for example, as 225930961 + 26988025 = 15031^2 + 5195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57011 + ... + 61286.

Almost surely, 2^252918986 is an apocalyptic number.

252918986 is a deficient number, since it is larger than the sum of its proper divisors (126817594).

252918986 is a wasteful number, since it uses less digits than its factorization.

252918986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119368.

The product of its digits is 622080, while the sum is 50.

The square root of 252918986 is about 15903.4268634153. The cubic root of 252918986 is about 632.4028386324.

The spelling of 252918986 in words is "two hundred fifty-two million, nine hundred eighteen thousand, nine hundred eighty-six".