318408 has 16 divisors (see below), whose sum is σ = 796080. Its totient is φ = 106128.

The previous prime is 318407. The next prime is 318419. The reversal of 318408 is 804813.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 13267 = 318408 / (3 + 1 + 8 + 4 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (318403) 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, 6610 + ... + 6657.

It is an arithmetic number, because the mean of its divisors is an integer number (49755).

2³¹⁸⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

318408 is an abundant number, since it is smaller than the sum of its proper divisors (477672).

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

318408 is a wasteful number, since it uses less digits than its factorization.

318408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276 (or 13272 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 318408 is about 564.2765279542. The cubic root of 318408 is about 68.2854208389.

The spelling of 318408 in words is "three hundred eighteen thousand, four hundred eight".