117781996 has 12 divisors (see below), whose sum is σ = 208942552. Its totient is φ = 58084128.

The previous prime is 117781987. The next prime is 117782003. The reversal of 117781996 is 699187711.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201390 + ... + 201973.

Almost surely, 2^117781996 is an apocalyptic number.

It is an amenable number.

117781996 is a deficient number, since it is larger than the sum of its proper divisors (91160556).

117781996 is a wasteful number, since it uses less digits than its factorization.

117781996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403440 (or 403438 counting only the distinct ones).

The product of its digits is 190512, while the sum is 49.

The square root of 117781996 is about 10852.7414048249. The cubic root of 117781996 is about 490.1845702019.

The spelling of 117781996 in words is "one hundred seventeen million, seven hundred eighty-one thousand, nine hundred ninety-six".