117638460 has 48 divisors (see below), whose sum is σ = 365988000. Its totient is φ = 31370112.

The previous prime is 117638431. The next prime is 117638483. The reversal of 117638460 is 64836711.

117638460 is a `hidden beast` number, since 1 + 17 + 638 + 4 + 6 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108385 + ... + 109464.

It is an arithmetic number, because the mean of its divisors is an integer number (7624750).

Almost surely, 2^117638460 is an apocalyptic number.

117638460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117638460 is an abundant number, since it is smaller than the sum of its proper divisors (248349540).

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

117638460 is a wasteful number, since it uses less digits than its factorization.

117638460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217867 (or 217859 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 117638460 is about 10846.1264975105. The cubic root of 117638460 is about 489.9853667711.

The spelling of 117638460 in words is "one hundred seventeen million, six hundred thirty-eight thousand, four hundred sixty".