117428158 has 8 divisors (see below), whose sum is σ = 180902952. Its totient is φ = 57127176.

The previous prime is 117428149. The next prime is 117428159. The reversal of 117428158 is 851824711.

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

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117428159) 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, 793360 + ... + 793507.

It is an arithmetic number, because the mean of its divisors is an integer number (22612869).

Almost surely, 2^117428158 is an apocalyptic number.

117428158 is a deficient number, since it is larger than the sum of its proper divisors (63474794).

117428158 is a wasteful number, since it uses less digits than its factorization.

117428158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586906.

The product of its digits is 17920, while the sum is 37.

The square root of 117428158 is about 10836.4273632964. The cubic root of 117428158 is about 489.6932107080.

It can be divided in two parts, 11742 and 8158, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 117428158 in words is "one hundred seventeen million, four hundred twenty-eight thousand, one hundred fifty-eight".