318426 has 16 divisors (see below), whose sum is σ = 646464. Its totient is φ = 104544.

The previous prime is 318419. The next prime is 318431. The reversal of 318426 is 624813.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 318396 and 318405.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318426.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75 + ... + 801.

It is an arithmetic number, because the mean of its divisors is an integer number (40404).

2³¹⁸⁴²⁶ is an apocalyptic number.

318426 is an abundant number, since it is smaller than the sum of its proper divisors (328038).

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

318426 is a wasteful number, since it uses less digits than its factorization.

318426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805.

The product of its digits is 1152, while the sum is 24.

The square root of 318426 is about 564.2924773555. The cubic root of 318426 is about 68.2867075679.

It can be divided in two parts, 3 and 18426, that multiplied together give a triangular number (55278 = T₃₃₂).

The spelling of 318426 in words is "three hundred eighteen thousand, four hundred twenty-six".