117654144 has 128 divisors (see below), whose sum is σ = 337089600. Its totient is φ = 36225024.

The previous prime is 117654143. The next prime is 117654169. The reversal of 117654144 is 441456711.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (117654143) 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, 437242 + ... + 437510.

Almost surely, 2^117654144 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 117654144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168544800).

117654144 is an abundant number, since it is smaller than the sum of its proper divisors (219435456).

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

117654144 is a wasteful number, since it uses less digits than its factorization.

117654144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 358 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 117654144 is about 10846.8494965128. The cubic root of 117654144 is about 490.0071413648.

The spelling of 117654144 in words is "one hundred seventeen million, six hundred fifty-four thousand, one hundred forty-four".