252839402 has 8 divisors (see below), whose sum is σ = 401568516. Its totient is φ = 118983232.

The previous prime is 252839399. The next prime is 252839423. The reversal of 252839402 is 204938252.

It can be written as a sum of positive squares in 2 ways, for example, as 241149841 + 11689561 = 15529^2 + 3419^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3718193 + ... + 3718260.

Almost surely, 2^252839402 is an apocalyptic number.

252839402 is a deficient number, since it is larger than the sum of its proper divisors (148729114).

252839402 is a wasteful number, since it uses less digits than its factorization.

252839402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7436472.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 252839402 is about 15900.9245643139. The cubic root of 252839402 is about 632.3365006215.

The spelling of 252839402 in words is "two hundred fifty-two million, eight hundred thirty-nine thousand, four hundred two".