117790305 has 16 divisors (see below), whose sum is σ = 190196160. Its totient is φ = 62244288.

The previous prime is 117790279. The next prime is 117790313. The reversal of 117790305 is 503097711.

It is not a de Polignac number, because 117790305 - 2¹⁵ = 117757537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34387 + ... + 37656.

It is an arithmetic number, because the mean of its divisors is an integer number (11887260).

Almost surely, 2^117790305 is an apocalyptic number.

117790305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117790305 is a deficient number, since it is larger than the sum of its proper divisors (72405855).

117790305 is a wasteful number, since it uses less digits than its factorization.

117790305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72160.

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 117790305 is about 10853.1242045781. The cubic root of 117790305 is about 490.1960967169.

The spelling of 117790305 in words is "one hundred seventeen million, seven hundred ninety thousand, three hundred five".