117788892 has 24 divisors (see below), whose sum is σ = 295982736. Its totient is φ = 36242688.

The previous prime is 117788887. The next prime is 117788893. The reversal of 117788892 is 298887711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117788893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377373 + ... + 377684.

It is an arithmetic number, because the mean of its divisors is an integer number (12332614).

Almost surely, 2^117788892 is an apocalyptic number.

117788892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117788892 is an abundant number, since it is smaller than the sum of its proper divisors (178193844).

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

117788892 is a wasteful number, since it uses less digits than its factorization.

117788892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755077 (or 755075 counting only the distinct ones).

The product of its digits is 451584, while the sum is 51.

The square root of 117788892 is about 10853.0591079198. The cubic root of 117788892 is about 490.1941365956.

The spelling of 117788892 in words is "one hundred seventeen million, seven hundred eighty-eight thousand, eight hundred ninety-two".