117510138 has 24 divisors (see below), whose sum is σ = 255210228. Its totient is φ = 39076992.

The previous prime is 117510131. The next prime is 117510149. The reversal of 117510138 is 831015711.

117510138 is a `hidden beast` number, since 1 + 17 + 510 + 138 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 87665769 + 29844369 = 9363^2 + 5463^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117510131) 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, 256 + ... + 15332.

Almost surely, 2^117510138 is an apocalyptic number.

117510138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117510138 is an abundant number, since it is smaller than the sum of its proper divisors (137700090).

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

117510138 is a wasteful number, since it uses less digits than its factorization.

117510138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518 (or 15515 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 117510138 is about 10840.2093153223. The cubic root of 117510138 is about 489.8071405399.

Adding to 117510138 its reverse (831015711), we get a palindrome (948525849).

The spelling of 117510138 in words is "one hundred seventeen million, five hundred ten thousand, one hundred thirty-eight".