252218682 has 12 divisors (see below), whose sum is σ = 546473850. Its totient is φ = 84072888.

The previous prime is 252218671. The next prime is 252218689. The reversal of 252218682 is 286812252.

It can be written as a sum of positive squares in only one way, i.e., 194017041 + 58201641 = 13929^2 + 7629^2 .

It is a super-2 number, since 2×252218682² = 127228527099634248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252218689) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7006057 + ... + 7006092.

Almost surely, 2^252218682 is an apocalyptic number.

252218682 is an abundant number, since it is smaller than the sum of its proper divisors (294255168).

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

252218682 is a wasteful number, since it uses less digits than its factorization.

252218682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14012157 (or 14012154 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 252218682 is about 15881.3942083181. The cubic root of 252218682 is about 631.8186151614.

The spelling of 252218682 in words is "two hundred fifty-two million, two hundred eighteen thousand, six hundred eighty-two".