117130728 has 64 divisors (see below), whose sum is σ = 344030400. Its totient is φ = 32762880.

The previous prime is 117130709. The next prime is 117130729. The reversal of 117130728 is 827031711.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 117130695 and 117130704.

It is not an unprimeable number, because it can be changed into a prime (117130729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13633 + ... + 20496.

It is an arithmetic number, because the mean of its divisors is an integer number (5375475).

Almost surely, 2^117130728 is an apocalyptic number.

It is an amenable number.

117130728 is an abundant number, since it is smaller than the sum of its proper divisors (226899672).

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

117130728 is a wasteful number, since it uses less digits than its factorization.

117130728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34162 (or 34158 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 117130728 is about 10822.6950432875. The cubic root of 117130728 is about 489.2794184292.

The spelling of 117130728 in words is "one hundred seventeen million, one hundred thirty thousand, seven hundred twenty-eight".