318628 has 6 divisors (see below), whose sum is σ = 557606. Its totient is φ = 159312.

The previous prime is 318601. The next prime is 318629. The reversal of 318628 is 826813.

318628 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 304704 + 13924 = 552^2 + 118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 318596 and 318605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39825 + ... + 39832.

2³¹⁸⁶²⁸ is an apocalyptic number.

It is an amenable number.

318628 is a deficient number, since it is larger than the sum of its proper divisors (238978).

318628 is a wasteful number, since it uses less digits than its factorization.

318628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79661 (or 79659 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 318628 is about 564.4714341754. The cubic root of 318628 is about 68.3011442022.

It can be divided in two parts, 318 and 628, that added together give a triangular number (946 = T₄₃).

The spelling of 318628 in words is "three hundred eighteen thousand, six hundred twenty-eight".