318992 has 10 divisors (see below), whose sum is σ = 618078. Its totient is φ = 159488.

The previous prime is 318979. The next prime is 319001. The reversal of 318992 is 299813.

It can be written as a sum of positive squares in only one way, i.e., 226576 + 92416 = 476^2 + 304^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318992.

It is an unprimeable number.

318992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9953 + ... + 9984.

2³¹⁸⁹⁹² is an apocalyptic number.

It is an amenable number.

318992 is a deficient number, since it is larger than the sum of its proper divisors (299086).

318992 is a wasteful number, since it uses less digits than its factorization.

318992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19945 (or 19939 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 318992 is about 564.7937676710. The cubic root of 318992 is about 68.3271433351.

The spelling of 318992 in words is "three hundred eighteen thousand, nine hundred ninety-two".