117978824 has 8 divisors (see below), whose sum is σ = 221210310. Its totient is φ = 58989408.

The previous prime is 117978823. The next prime is 117978857. The reversal of 117978824 is 428879711.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 11682724 = 10310^2 + 3418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (117978821) by changing a digit.

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 as a sum of consecutive naturals, namely, 7373669 + ... + 7373684.

Almost surely, 2^117978824 is an apocalyptic number.

It is an amenable number.

117978824 is a deficient number, since it is larger than the sum of its proper divisors (103231486).

117978824 is a wasteful number, since it uses less digits than its factorization.

117978824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14747359 (or 14747355 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 117978824 is about 10861.8057430613. The cubic root of 117978824 is about 490.4574708639.

The spelling of 117978824 in words is "one hundred seventeen million, nine hundred seventy-eight thousand, eight hundred twenty-four".