252728226 has 24 divisors (see below), whose sum is σ = 548031744. Its totient is φ = 84172920.

The previous prime is 252728219. The next prime is 252728237. The reversal of 252728226 is 622827252.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19471 + ... + 29741.

It is an arithmetic number, because the mean of its divisors is an integer number (22834656).

Almost surely, 2^252728226 is an apocalyptic number.

252728226 is an abundant number, since it is smaller than the sum of its proper divisors (295303518).

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

252728226 is a wasteful number, since it uses less digits than its factorization.

252728226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11646 (or 11643 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 252728226 is about 15897.4282825871. The cubic root of 252728226 is about 632.2438054842.

The spelling of 252728226 in words is "two hundred fifty-two million, seven hundred twenty-eight thousand, two hundred twenty-six".