117205290 has 24 divisors (see below), whose sum is σ = 304733988. Its totient is φ = 31254720.

The previous prime is 117205279. The next prime is 117205301. The reversal of 117205290 is 92502711.

117205290 is a `hidden beast` number, since 117 + 20 + 529 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (117205279) and next prime (117205301).

It can be written as a sum of positive squares in 2 ways, for example, as 106688241 + 10517049 = 10329^2 + 3243^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 651051 + ... + 651230.

Almost surely, 2^117205290 is an apocalyptic number.

117205290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117205290 is an abundant number, since it is smaller than the sum of its proper divisors (187528698).

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

117205290 is a wasteful number, since it uses less digits than its factorization.

117205290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302294 (or 1302291 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 117205290 is about 10826.1392010264. The cubic root of 117205290 is about 489.3832167359.

The spelling of 117205290 in words is "one hundred seventeen million, two hundred five thousand, two hundred ninety".