117888507 has 16 divisors (see below), whose sum is σ = 190527360. Its totient is φ = 71447400.

The previous prime is 117888497. The next prime is 117888517. The reversal of 117888507 is 705888711.

It is an interprime number because it is at equal distance from previous prime (117888497) and next prime (117888517).

It is not a de Polignac number, because 117888507 - 2¹⁴ = 117872123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117888517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198169 + ... + 198762.

It is an arithmetic number, because the mean of its divisors is an integer number (11907960).

Almost surely, 2^117888507 is an apocalyptic number.

117888507 is a deficient number, since it is larger than the sum of its proper divisors (72638853).

117888507 is a wasteful number, since it uses less digits than its factorization.

117888507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396951 (or 396945 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 45.

The square root of 117888507 is about 10857.6473971114. The cubic root of 117888507 is about 490.3322846814.

The spelling of 117888507 in words is "one hundred seventeen million, eight hundred eighty-eight thousand, five hundred seven".