117897510 has 16 divisors (see below), whose sum is σ = 282954096. Its totient is φ = 31439328.

The previous prime is 117897473. The next prime is 117897539. The reversal of 117897510 is 15798711.

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, 1964929 + ... + 1964988.

It is an arithmetic number, because the mean of its divisors is an integer number (17684631).

Almost surely, 2^117897510 is an apocalyptic number.

117897510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117897510 is an abundant number, since it is smaller than the sum of its proper divisors (165056586).

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

117897510 is a wasteful number, since it uses less digits than its factorization.

117897510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929927.

The product of its (nonzero) digits is 17640, while the sum is 39.

The square root of 117897510 is about 10858.0619817719. The cubic root of 117897510 is about 490.3447663878.

The spelling of 117897510 in words is "one hundred seventeen million, eight hundred ninety-seven thousand, five hundred ten".