117897072 has 40 divisors (see below), whose sum is σ = 308432640. Its totient is φ = 38800320.

The previous prime is 117897053. The next prime is 117897083. The reversal of 117897072 is 270798711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11754 + ... + 19337.

It is an arithmetic number, because the mean of its divisors is an integer number (7710816).

Almost surely, 2^117897072 is an apocalyptic number.

117897072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117897072 is an abundant number, since it is smaller than the sum of its proper divisors (190535568).

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

117897072 is a wasteful number, since it uses less digits than its factorization.

117897072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31181 (or 31175 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 42.

The square root of 117897072 is about 10858.0418124080. The cubic root of 117897072 is about 490.3441591619.

The spelling of 117897072 in words is "one hundred seventeen million, eight hundred ninety-seven thousand, seventy-two".