117845128 has 8 divisors (see below), whose sum is σ = 220959630. Its totient is φ = 58922560.

The previous prime is 117845113. The next prime is 117845131. The reversal of 117845128 is 821548711.

It can be written as a sum of positive squares in only one way, i.e., 91814724 + 26030404 = 9582^2 + 5102^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7365313 + ... + 7365328.

Almost surely, 2^117845128 is an apocalyptic number.

It is an amenable number.

117845128 is a deficient number, since it is larger than the sum of its proper divisors (103114502).

117845128 is a wasteful number, since it uses less digits than its factorization.

117845128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14730647 (or 14730643 counting only the distinct ones).

The product of its digits is 17920, while the sum is 37.

The square root of 117845128 is about 10855.6495890389. The cubic root of 117845128 is about 490.2721353812.

The spelling of 117845128 in words is "one hundred seventeen million, eight hundred forty-five thousand, one hundred twenty-eight".