117838280 has 32 divisors (see below), whose sum is σ = 303013440. Its totient is φ = 40401600.

The previous prime is 117838277. The next prime is 117838291. The reversal of 117838280 is 82838711.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 210146 + ... + 210705.

It is an arithmetic number, because the mean of its divisors is an integer number (9469170).

Almost surely, 2^117838280 is an apocalyptic number.

117838280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117838280 is an abundant number, since it is smaller than the sum of its proper divisors (185175160).

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

117838280 is a wasteful number, since it uses less digits than its factorization.

117838280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420869 (or 420865 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 117838280 is about 10855.3341726545. The cubic root of 117838280 is about 490.2626385988.

The spelling of 117838280 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, two hundred eighty".