318828 has 18 divisors (see below), whose sum is σ = 748524. Its totient is φ = 105624.

The previous prime is 318823. The next prime is 318833. The reversal of 318828 is 828813.

It is an interprime number because it is at equal distance from previous prime (318823) and next prime (318833).

It is a junction number, because it is equal to n+sod(n) for n = 318795 and 318804.

It is not an unprimeable number, because it can be changed into a prime (318823) by changing a digit.

318828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 1875 + ... + 2037.

2³¹⁸⁸²⁸ is an apocalyptic number.

It is an amenable number.

318828 is an abundant number, since it is smaller than the sum of its proper divisors (429696).

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

318828 is a wasteful number, since it uses less digits than its factorization.

318828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 168 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 318828 is about 564.6485632675. The cubic root of 318828 is about 68.3154318895.

Multiplying 318828 by its product of digits (3072), we get a square (979439616 = 31296²).

The spelling of 318828 in words is "three hundred eighteen thousand, eight hundred twenty-eight".