318690432 has 96 divisors (see below), whose sum is σ = 971069580. Its totient is φ = 99975168.

The previous prime is 318690389. The next prime is 318690469. The reversal of 318690432 is 234096813.

It can be written as a sum of positive squares in 2 ways, for example, as 259338816 + 59351616 = 16104^2 + 7704^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11448 + ... + 27720.

Almost surely, 2^318690432 is an apocalyptic number.

318690432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318690432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485534790).

318690432 is an abundant number, since it is smaller than the sum of its proper divisors (652379148).

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

318690432 is a wasteful number, since it uses less digits than its factorization.

318690432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16310 (or 16295 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 318690432 is about 17851.9027557289. The cubic root of 318690432 is about 683.0560488836.

The spelling of 318690432 in words is "three hundred eighteen million, six hundred ninety thousand, four hundred thirty-two".