252806394 has 8 divisors (see below), whose sum is σ = 505612800. Its totient is φ = 84268796.

The previous prime is 252806377. The next prime is 252806401. The reversal of 252806394 is 493608252.

It is a happy number.

252806394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

252806394 is an admirable number.

It is a super-2 number, since 2×252806394² = 127822145694566472, which contains 22 as substring.

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, 21067194 + ... + 21067205.

It is an arithmetic number, because the mean of its divisors is an integer number (63201600).

Almost surely, 2^252806394 is an apocalyptic number.

252806394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

252806394 is a wasteful number, since it uses less digits than its factorization.

252806394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42134404.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 252806394 is about 15899.8866033692. The cubic root of 252806394 is about 632.3089824006.

The spelling of 252806394 in words is "two hundred fifty-two million, eight hundred six thousand, three hundred ninety-four".