117385780 has 12 divisors (see below), whose sum is σ = 246510180. Its totient is φ = 46954304.

The previous prime is 117385771. The next prime is 117385787. The reversal of 117385780 is 87583711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 81649296 + 35736484 = 9036^2 + 5978^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117385787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934625 + ... + 2934664.

It is an arithmetic number, because the mean of its divisors is an integer number (20542515).

Almost surely, 2^117385780 is an apocalyptic number.

117385780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117385780 is an abundant number, since it is smaller than the sum of its proper divisors (129124400).

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

117385780 is a wasteful number, since it uses less digits than its factorization.

117385780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869298 (or 5869296 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 117385780 is about 10834.4718376117. The cubic root of 117385780 is about 489.6342960600.

The spelling of 117385780 in words is "one hundred seventeen million, three hundred eighty-five thousand, seven hundred eighty".