117890245 has 8 divisors (see below), whose sum is σ = 154329120. Its totient is φ = 85738320.

The previous prime is 117890243. The next prime is 117890261. The reversal of 117890245 is 542098711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117890245 - 2¹ = 117890243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117890243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071675 + ... + 1071784.

It is an arithmetic number, because the mean of its divisors is an integer number (19291140).

Almost surely, 2^117890245 is an apocalyptic number.

It is an amenable number.

117890245 is a deficient number, since it is larger than the sum of its proper divisors (36438875).

117890245 is a wasteful number, since it uses less digits than its factorization.

117890245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143475.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 117890245 is about 10857.7274325708. The cubic root of 117890245 is about 490.3346942839.

The spelling of 117890245 in words is "one hundred seventeen million, eight hundred ninety thousand, two hundred forty-five".