318028644 has 36 divisors (see below), whose sum is σ = 817536720. Its totient is φ = 104212080.

The previous prime is 318028609. The next prime is 318028657. The reversal of 318028644 is 446820813.

318028644 is a `hidden beast` number, since 3 + 1 + 8 + 0 + 2 + 8 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×318028644² = 202284436808957472, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 318028599 and 318028608.

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, 72742 + ... + 76989.

Almost surely, 2^318028644 is an apocalyptic number.

It is an amenable number.

318028644 is an abundant number, since it is smaller than the sum of its proper divisors (499508076).

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

318028644 is a wasteful number, since it uses less digits than its factorization.

318028644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149800 (or 149795 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 318028644 is about 17833.3576199212. The cubic root of 318028644 is about 682.5829130844.

The spelling of 318028644 in words is "three hundred eighteen million, twenty-eight thousand, six hundred forty-four".