318225992 has 108 divisors (see below), whose sum is σ = 751494555. Its totient is φ = 125938176.

The previous prime is 318225991. The next prime is 318226001. The reversal of 318225992 is 299522813.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 297010756 + 21215236 = 17234^2 + 4606^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=12614.

Its product of digits (77760) is a multiple of the sum of its prime factors (160).

It is not an unprimeable number, because it can be changed into a prime (318225991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6004238 + ... + 6004290.

Almost surely, 2^318225992 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 318225992

318225992 is an abundant number, since it is smaller than the sum of its proper divisors (433268563).

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

318225992 is a wasteful number, since it uses less digits than its factorization.

318225992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 79 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 318225992 is about 17838.8898757742. The cubic root of 318225992 is about 682.7240728211.

The spelling of 318225992 in words is "three hundred eighteen million, two hundred twenty-five thousand, nine hundred ninety-two".