252747784 has 16 divisors (see below), whose sum is σ = 475178220. Its totient is φ = 126033600.

The previous prime is 252747779. The next prime is 252747791. The reversal of 252747784 is 487747252.

It can be written as a sum of positive squares in 2 ways, for example, as 248945284 + 3802500 = 15778^2 + 1950^2 .

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, 39367 + ... + 45334.

Almost surely, 2^252747784 is an apocalyptic number.

It is an amenable number.

252747784 is a deficient number, since it is larger than the sum of its proper divisors (222430436).

252747784 is a wasteful number, since it uses less digits than its factorization.

252747784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85080 (or 85076 counting only the distinct ones).

The product of its digits is 878080, while the sum is 46.

The square root of 252747784 is about 15898.0434016265. The cubic root of 252747784 is about 632.2601143147.

The spelling of 252747784 in words is "two hundred fifty-two million, seven hundred forty-seven thousand, seven hundred eighty-four".