252806398 has 32 divisors (see below), whose sum is σ = 424569600. Its totient is φ = 112094976.

The previous prime is 252806377. The next prime is 252806401. The reversal of 252806398 is 893608252.

It is a super-2 number, since 2×252806398² = 127822149739468808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174963 + ... + 176401.

It is an arithmetic number, because the mean of its divisors is an integer number (13267800).

Almost surely, 2^252806398 is an apocalyptic number.

252806398 is a deficient number, since it is larger than the sum of its proper divisors (171763202).

252806398 is a wasteful number, since it uses less digits than its factorization.

252806398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 252806398 is about 15899.8867291563. The cubic root of 252806398 is about 632.3089857355.

The spelling of 252806398 in words is "two hundred fifty-two million, eight hundred six thousand, three hundred ninety-eight".