117281870 has 16 divisors (see below), whose sum is σ = 222218640. Its totient is φ = 44443584.

The previous prime is 117281869. The next prime is 117281881. The reversal of 117281870 is 78182711.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 117281870.

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, 308447 + ... + 308826.

It is an arithmetic number, because the mean of its divisors is an integer number (13888665).

Almost surely, 2^117281870 is an apocalyptic number.

117281870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117281870 is a deficient number, since it is larger than the sum of its proper divisors (104936770).

117281870 is a wasteful number, since it uses less digits than its factorization.

117281870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617299.

The product of its (nonzero) digits is 6272, while the sum is 35.

The square root of 117281870 is about 10829.6754337330. The cubic root of 117281870 is about 489.4897785001.

The spelling of 117281870 in words is "one hundred seventeen million, two hundred eighty-one thousand, eight hundred seventy".