117512928 has 72 divisors (see below), whose sum is σ = 359894808. Its totient is φ = 36156672.

The previous prime is 117512903. The next prime is 117512933. The reversal of 117512928 is 829215711.

It is a happy number.

117512928 is a `hidden beast` number, since 117 + 512 + 9 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 = 117512892 and 117512901.

It is a congruent number.

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, 11950 + ... + 19437.

It is an arithmetic number, because the mean of its divisors is an integer number (4998539).

Almost surely, 2^117512928 is an apocalyptic number.

117512928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

117512928 is an abundant number, since it is smaller than the sum of its proper divisors (242381880).

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

117512928 is a wasteful number, since it uses less digits than its factorization.

117512928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31416 (or 31405 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 117512928 is about 10840.3380021105. The cubic root of 117512928 is about 489.8110169461.

The spelling of 117512928 in words is "one hundred seventeen million, five hundred twelve thousand, nine hundred twenty-eight".