117511840 has 36 divisors (see below), whose sum is σ = 277946046. Its totient is φ = 46949888.

The previous prime is 117511817. The next prime is 117511873. The reversal of 117511840 is 48115711.

It can be written as a sum of positive squares in 3 ways, for example, as 117245584 + 266256 = 10828^2 + 516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 117511799 and 117511808.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136692 + ... + 137548.

Almost surely, 2^117511840 is an apocalyptic number.

117511840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117511840 is an abundant number, since it is smaller than the sum of its proper divisors (160434206).

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

117511840 is an frugal number, since it uses more digits than its factorization.

117511840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 28.

The square root of 117511840 is about 10840.2878190572. The cubic root of 117511840 is about 489.8095052939.

The spelling of 117511840 in words is "one hundred seventeen million, five hundred eleven thousand, eight hundred forty".