117911424 has 64 divisors (see below), whose sum is σ = 317946240. Its totient is φ = 38708736.

The previous prime is 117911407. The next prime is 117911447. The reversal of 117911424 is 424119711.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 117911391 and 117911400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23437 + ... + 28019.

It is an arithmetic number, because the mean of its divisors is an integer number (4967910).

Almost surely, 2^117911424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117911424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158973120).

117911424 is an abundant number, since it is smaller than the sum of its proper divisors (200034816).

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

117911424 is an equidigital number, since it uses as much as digits as its factorization.

117911424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4655 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 117911424 is about 10858.7026849435. The cubic root of 117911424 is about 490.3640554259.

The spelling of 117911424 in words is "one hundred seventeen million, nine hundred eleven thousand, four hundred twenty-four".