117815472 has 50 divisors (see below), whose sum is σ = 340995908. Its totient is φ = 39271392.

The previous prime is 117815471. The next prime is 117815539. The reversal of 117815472 is 274518711.

117815472 is a `hidden beast` number, since 1 + 178 + 15 + 472 = 666.

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 (117815471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44158 + ... + 46749.

Almost surely, 2^117815472 is an apocalyptic number.

117815472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117815472 is an abundant number, since it is smaller than the sum of its proper divisors (223180436).

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

117815472 is an equidigital number, since it uses as much as digits as its factorization.

117815472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90927 (or 90912 counting only the distinct ones).

The product of its digits is 15680, while the sum is 36.

The square root of 117815472 is about 10854.2835783851. The cubic root of 117815472 is about 490.2310058906.

The spelling of 117815472 in words is "one hundred seventeen million, eight hundred fifteen thousand, four hundred seventy-two".