117378972 has 36 divisors (see below), whose sum is σ = 297152856. Its totient is φ = 39067680.

The previous prime is 117378929. The next prime is 117378973. The reversal of 117378972 is 279873711.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117378973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26647 + ... + 30737.

It is an arithmetic number, because the mean of its divisors is an integer number (8254246).

Almost surely, 2^117378972 is an apocalyptic number.

117378972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117378972 is an abundant number, since it is smaller than the sum of its proper divisors (179773884).

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

117378972 is a wasteful number, since it uses less digits than its factorization.

117378972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898 (or 4893 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 117378972 is about 10834.1576506898. The cubic root of 117378972 is about 489.6248301357.

The spelling of 117378972 in words is "one hundred seventeen million, three hundred seventy-eight thousand, nine hundred seventy-two".