117291672 has 32 divisors (see below), whose sum is σ = 325810800. Its totient is φ = 39097152.

The previous prime is 117291667. The next prime is 117291673. The reversal of 117291672 is 276192711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117291673) 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 7 ways as a sum of consecutive naturals, for example, 271293 + ... + 271724.

Almost surely, 2^117291672 is an apocalyptic number.

117291672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117291672 is an abundant number, since it is smaller than the sum of its proper divisors (208519128).

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

117291672 is a wasteful number, since it uses less digits than its factorization.

117291672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543032 (or 543022 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 117291672 is about 10830.1279770832. The cubic root of 117291672 is about 489.5034147230.

The spelling of 117291672 in words is "one hundred seventeen million, two hundred ninety-one thousand, six hundred seventy-two".