117930 has 16 divisors (see below), whose sum is σ = 283104. Its totient is φ = 31440.

The previous prime is 117917. The next prime is 117937. The reversal of 117930 is 39711.

Added to its reverse (39711) it gives a triangular number (157641 = T₅₆₁).

It is a junction number, because it is equal to n+sod(n) for n = 117897 and 117906.

It is not an unprimeable number, because it can be changed into a prime (117937) by changing a digit.

117930 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936 + ... + 1995.

It is an arithmetic number, because the mean of its divisors is an integer number (17694).

2¹¹⁷⁹³⁰ is an apocalyptic number.

117930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117930 is an abundant number, since it is smaller than the sum of its proper divisors (165174).

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

117930 is a wasteful number, since it uses less digits than its factorization.

117930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3941.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 117930 is about 343.4093766920. The cubic root of 117930 is about 49.0389805050.

Adding to 117930 its reverse (39711), we get a triangular number (157641 = T₅₆₁).

The spelling of 117930 in words is "one hundred seventeen thousand, nine hundred thirty".