252347618 has 8 divisors (see below), whose sum is σ = 391573980. Its totient is φ = 121822960.

The previous prime is 252347617. The next prime is 252347687. The reversal of 252347618 is 816743252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 221622769 + 30724849 = 14887^2 + 5543^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (252347611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175353 + ... + 2175468.

Almost surely, 2^252347618 is an apocalyptic number.

252347618 is a deficient number, since it is larger than the sum of its proper divisors (139226362).

252347618 is a wasteful number, since it uses less digits than its factorization.

252347618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350852.

The product of its digits is 80640, while the sum is 38.

The square root of 252347618 is about 15885.4530309966. The cubic root of 252347618 is about 631.9262602237.

The spelling of 252347618 in words is "two hundred fifty-two million, three hundred forty-seven thousand, six hundred eighteen".