117397812 has 48 divisors (see below), whose sum is σ = 313617920. Its totient is φ = 33482592.

The previous prime is 117397811. The next prime is 117397823. The reversal of 117397812 is 218793711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117397811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71343 + ... + 72969.

Almost surely, 2^117397812 is an apocalyptic number.

117397812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117397812 is an abundant number, since it is smaller than the sum of its proper divisors (196220108).

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

117397812 is a wasteful number, since it uses less digits than its factorization.

117397812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500 (or 2498 counting only the distinct ones).

The product of its digits is 21168, while the sum is 39.

The square root of 117397812 is about 10835.0270881064. The cubic root of 117397812 is about 489.6510246012.

The spelling of 117397812 in words is "one hundred seventeen million, three hundred ninety-seven thousand, eight hundred twelve".