252778912 has 24 divisors (see below), whose sum is σ = 498461796. Its totient is φ = 126185472.

The previous prime is 252778909. The next prime is 252778913. The reversal of 252778912 is 219877252.

It can be written as a sum of positive squares in 2 ways, for example, as 204947856 + 47831056 = 14316^2 + 6916^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (252778913) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14848 + ... + 26944.

Almost surely, 2^252778912 is an apocalyptic number.

It is an amenable number.

252778912 is a deficient number, since it is larger than the sum of its proper divisors (245682884).

252778912 is a wasteful number, since it uses less digits than its factorization.

252778912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12760 (or 12752 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 252778912 is about 15899.0223598811. The cubic root of 252778912 is about 632.2860692866.

The spelling of 252778912 in words is "two hundred fifty-two million, seven hundred seventy-eight thousand, nine hundred twelve".