117528570 has 80 divisors (see below), whose sum is σ = 317683080. Its totient is φ = 31176576.

The previous prime is 117528559. The next prime is 117528583. The reversal of 117528570 is 75825711.

117528570 is a `hidden beast` number, since 11 + 75 + 2 + 8 + 570 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 82137969 + 35390601 = 9063^2 + 5949^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 301936 + ... + 302324.

Almost surely, 2^117528570 is an apocalyptic number.

117528570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117528570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158841540).

117528570 is an abundant number, since it is smaller than the sum of its proper divisors (200154510).

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

117528570 is a wasteful number, since it uses less digits than its factorization.

117528570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 117528570 is about 10841.0594500722. The cubic root of 117528570 is about 489.8327486941.

The spelling of 117528570 in words is "one hundred seventeen million, five hundred twenty-eight thousand, five hundred seventy".