117285 has 16 divisors (see below), whose sum is σ = 214656. Its totient is φ = 53568.

The previous prime is 117281. The next prime is 117307. The reversal of 117285 is 582711.

117285 = 40² + 41² + ... + 74².

It is not a de Polignac number, because 117285 - 2² = 117281 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 117285.

It is not an unprimeable number, because it can be changed into a prime (117281) 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, 454 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (13416).

2¹¹⁷²⁸⁵ is an apocalyptic number.

117285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117285 is a deficient number, since it is larger than the sum of its proper divisors (97371).

117285 is a wasteful number, since it uses less digits than its factorization.

117285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its digits is 560, while the sum is 24.

The square root of 117285 is about 342.4689766972. The cubic root of 117285 is about 48.9494132937.

Adding to 117285 its reverse (582711), we get a palindrome (699996).

The spelling of 117285 in words is "one hundred seventeen thousand, two hundred eighty-five".