117015840 has 120 divisors (see below), whose sum is σ = 413014140. Its totient is φ = 31200768.

The previous prime is 117015839. The next prime is 117015859. The reversal of 117015840 is 48510711.

117015840 is a `hidden beast` number, since 11 + 70 + 1 + 584 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106750224 + 10265616 = 10332^2 + 3204^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 8446 + ... + 17474.

Almost surely, 2^117015840 is an apocalyptic number.

117015840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117015840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206507070).

117015840 is an abundant number, since it is smaller than the sum of its proper divisors (295998300).

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

117015840 is an equidigital number, since it uses as much as digits as its factorization.

117015840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9056 (or 9039 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 117015840 is about 10817.3860058704. The cubic root of 117015840 is about 489.1193957393.

It can be divided in two parts, 117015 and 840, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 117015840 in words is "one hundred seventeen million, fifteen thousand, eight hundred forty".