117993240 has 64 divisors (see below), whose sum is σ = 393314400. Its totient is φ = 31464576.

The previous prime is 117993217. The next prime is 117993241. The reversal of 117993240 is 42399711.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 117993195 and 117993204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117993241) 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, 53547 + ... + 55706.

Almost surely, 2^117993240 is an apocalyptic number.

117993240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117993240 is an abundant number, since it is smaller than the sum of its proper divisors (275321160).

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

117993240 is a wasteful number, since it uses less digits than its factorization.

117993240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109273 (or 109263 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 117993240 is about 10862.4693325229. The cubic root of 117993240 is about 490.4774466152.

The spelling of 117993240 in words is "one hundred seventeen million, nine hundred ninety-three thousand, two hundred forty".