117391828 has 12 divisors (see below), whose sum is σ = 208918080. Its totient is φ = 57700952.

The previous prime is 117391819. The next prime is 117391829. The reversal of 117391828 is 828193711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117391829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248476 + ... + 248947.

It is an arithmetic number, because the mean of its divisors is an integer number (17409840).

Almost surely, 2^117391828 is an apocalyptic number.

It is an amenable number.

117391828 is a deficient number, since it is larger than the sum of its proper divisors (91526252).

117391828 is a wasteful number, since it uses less digits than its factorization.

117391828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497486 (or 497484 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 117391828 is about 10834.7509431459. The cubic root of 117391828 is about 489.6427049643.

The spelling of 117391828 in words is "one hundred seventeen million, three hundred ninety-one thousand, eight hundred twenty-eight".