117228178 has 4 divisors (see below), whose sum is σ = 175842270. Its totient is φ = 58614088.

The previous prime is 117228161. The next prime is 117228193. The reversal of 117228178 is 871822711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 106357969 + 10870209 = 10313^2 + 3297^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29307043 + ... + 29307046.

Almost surely, 2^117228178 is an apocalyptic number.

117228178 is a deficient number, since it is larger than the sum of its proper divisors (58614092).

117228178 is an equidigital number, since it uses as much as digits as its factorization.

117228178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58614091.

The product of its digits is 12544, while the sum is 37.

The square root of 117228178 is about 10827.1962206289. The cubic root of 117228178 is about 489.4150704575.

It can be divided in two parts, 11722 and 8178, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 117228178 in words is "one hundred seventeen million, two hundred twenty-eight thousand, one hundred seventy-eight".