117283890 has 16 divisors (see below), whose sum is σ = 281481408. Its totient is φ = 31275696.

The previous prime is 117283871. The next prime is 117283921. The reversal of 117283890 is 98382711.

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, 1954702 + ... + 1954761.

It is an arithmetic number, because the mean of its divisors is an integer number (17592588).

Almost surely, 2^117283890 is an apocalyptic number.

117283890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117283890 is an abundant number, since it is smaller than the sum of its proper divisors (164197518).

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

117283890 is a wasteful number, since it uses less digits than its factorization.

117283890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909473.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 117283890 is about 10829.7686955909. The cubic root of 117283890 is about 489.4925887204.

The spelling of 117283890 in words is "one hundred seventeen million, two hundred eighty-three thousand, eight hundred ninety".