117928 has 8 divisors (see below), whose sum is σ = 221130. Its totient is φ = 58960.

The previous prime is 117917. The next prime is 117937. The reversal of 117928 is 829711.

It can be written as a sum of positive squares in only one way, i.e., 68644 + 49284 = 262^2 + 222^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 117896 and 117905.

It is an unprimeable number.

117928 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, 7363 + ... + 7378.

2¹¹⁷⁹²⁸ is an apocalyptic number.

It is an amenable number.

117928 is a deficient number, since it is larger than the sum of its proper divisors (103202).

117928 is a wasteful number, since it uses less digits than its factorization.

117928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14747 (or 14743 counting only the distinct ones).

The product of its digits is 1008, while the sum is 28.

The square root of 117928 is about 343.4064647033. The cubic root of 117928 is about 49.0387032826.

The spelling of 117928 in words is "one hundred seventeen thousand, nine hundred twenty-eight".