252218806 has 32 divisors (see below), whose sum is σ = 459360000. Its totient is φ = 101453472.

The previous prime is 252218803. The next prime is 252218807. The reversal of 252218806 is 608812252.

252218806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×252218806² = 127228652200131272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252218803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24645 + ... + 33343.

It is an arithmetic number, because the mean of its divisors is an integer number (14355000).

Almost surely, 2^252218806 is an apocalyptic number.

252218806 is a deficient number, since it is larger than the sum of its proper divisors (207141194).

252218806 is a wasteful number, since it uses less digits than its factorization.

252218806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8836.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 252218806 is about 15881.3981122570. The cubic root of 252218806 is about 631.8187187032.

The spelling of 252218806 in words is "two hundred fifty-two million, two hundred eighteen thousand, eight hundred six".