117918736 has 30 divisors (see below), whose sum is σ = 247399530. Its totient is φ = 54422784.

The previous prime is 117918719. The next prime is 117918739. The reversal of 117918736 is 637819711.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8088336 + 109830400 = 2844^2 + 10480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 117918692 and 117918701.

It is not an unprimeable number, because it can be changed into a prime (117918739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19101 + ... + 24508.

It is an arithmetic number, because the mean of its divisors is an integer number (8246651).

Almost surely, 2^117918736 is an apocalyptic number.

117918736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

117918736 is an abundant number, since it is smaller than the sum of its proper divisors (129480794).

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

117918736 is a wasteful number, since it uses less digits than its factorization.

117918736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43643 (or 43624 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 117918736 is about 10859.0393681946. The cubic root of 117918736 is about 490.3741914748.

The spelling of 117918736 in words is "one hundred seventeen million, nine hundred eighteen thousand, seven hundred thirty-six".