117289540 has 48 divisors (see below), whose sum is σ = 251475840. Its totient is φ = 45943040.

The previous prime is 117289531. The next prime is 117289547. The reversal of 117289540 is 45982711.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 117289540.

It is not an unprimeable number, because it can be changed into a prime (117289547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232929 + ... + 233431.

It is an arithmetic number, because the mean of its divisors is an integer number (5239080).

Almost surely, 2^117289540 is an apocalyptic number.

117289540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117289540 is an abundant number, since it is smaller than the sum of its proper divisors (134186300).

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

117289540 is a wasteful number, since it uses less digits than its factorization.

117289540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 117289540 is about 10830.0295475128. The cubic root of 117289540 is about 489.5004488187.

The spelling of 117289540 in words is "one hundred seventeen million, two hundred eighty-nine thousand, five hundred forty".