117557730 has 40 divisors (see below), whose sum is σ = 316101852. Its totient is φ = 31348512.

The previous prime is 117557729. The next prime is 117557747. The reversal of 117557730 is 37755711.

It is a happy number.

117557730 is a `hidden beast` number, since 11 + 75 + 577 + 3 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 111070521 + 6487209 = 10539^2 + 2547^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 71757 + ... + 73376.

Almost surely, 2^117557730 is an apocalyptic number.

117557730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117557730 is an abundant number, since it is smaller than the sum of its proper divisors (198544122).

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

117557730 is a wasteful number, since it uses less digits than its factorization.

117557730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145152 (or 145143 counting only the distinct ones).

The product of its (nonzero) digits is 25725, while the sum is 36.

The square root of 117557730 is about 10842.4042536699. The cubic root of 117557730 is about 489.8732561265.

The spelling of 117557730 in words is "one hundred seventeen million, five hundred fifty-seven thousand, seven hundred thirty".