117728164 has 12 divisors (see below), whose sum is σ = 206209584. Its totient is φ = 58811144.

The previous prime is 117728159. The next prime is 117728183. The reversal of 117728164 is 461827711.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8002 + ... + 17305.

It is an arithmetic number, because the mean of its divisors is an integer number (17184132).

Almost surely, 2^117728164 is an apocalyptic number.

It is an amenable number.

117728164 is a deficient number, since it is larger than the sum of its proper divisors (88481420).

117728164 is a wasteful number, since it uses less digits than its factorization.

117728164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26474 (or 26472 counting only the distinct ones).

The product of its digits is 18816, while the sum is 37.

The square root of 117728164 is about 10850.2610106854. The cubic root of 117728164 is about 490.1098795649.

It can be divided in two parts, 1177281 and 64, that added together give a triangular number (1177345 = T₁₅₃₄).

The spelling of 117728164 in words is "one hundred seventeen million, seven hundred twenty-eight thousand, one hundred sixty-four".