117455616 has 72 divisors (see below), whose sum is σ = 347357360. Its totient is φ = 39149568.

The previous prime is 117455599. The next prime is 117455617. The reversal of 117455616 is 616554711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (117455617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585 + ... + 15408.

Almost surely, 2^117455616 is an apocalyptic number.

117455616 is a gapful number since it is divisible by the number (16) 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 117455616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173678680).

117455616 is an abundant number, since it is smaller than the sum of its proper divisors (229901744).

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

117455616 is an equidigital number, since it uses as much as digits as its factorization.

117455616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17018 (or 16998 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 117455616 is about 10837.6942197130. The cubic root of 117455616 is about 489.7313757402.

The spelling of 117455616 in words is "one hundred seventeen million, four hundred fifty-five thousand, six hundred sixteen".