117201840 has 80 divisors (see below), whose sum is σ = 415235328. Its totient is φ = 26788608.

The previous prime is 117201797. The next prime is 117201841. The reversal of 117201840 is 48102711.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 117201840.

It is not an unprimeable number, because it can be changed into a prime (117201841) 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, 33202 + ... + 36561.

Almost surely, 2^117201840 is an apocalyptic number.

117201840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117201840 is an abundant number, since it is smaller than the sum of its proper divisors (298033488).

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

117201840 is a wasteful number, since it uses less digits than its factorization.

117201840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69786 (or 69780 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 117201840 is about 10825.9798632733. The cubic root of 117201840 is about 489.3784149371.

The spelling of 117201840 in words is "one hundred seventeen million, two hundred one thousand, eight hundred forty".