318669056 has 72 divisors (see below), whose sum is σ = 660428664. Its totient is φ = 153354240.

The previous prime is 318669053. The next prime is 318669073. The reversal of 318669056 is 650966813.

It can be written as a sum of positive squares in 4 ways, for example, as 22278400 + 296390656 = 4720^2 + 17216^2 .

It is a super-2 number, since 2×318669056² = 203099934503862272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 318668998 and 318669016.

It is not an unprimeable number, because it can be changed into a prime (318669053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017956 + ... + 1018268.

Almost surely, 2^318669056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318669056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330214332).

318669056 is an abundant number, since it is smaller than the sum of its proper divisors (341759608).

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

318669056 is an equidigital number, since it uses as much as digits as its factorization.

318669056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 318669056 is about 17851.3040420021. The cubic root of 318669056 is about 683.0407766621.

The spelling of 318669056 in words is "three hundred eighteen million, six hundred sixty-nine thousand, fifty-six".