172117448 has 16 divisors (see below), whose sum is σ = 323755980. Its totient is φ = 85782528.

The previous prime is 172117423. The next prime is 172117453. The reversal of 172117448 is 844711271.

It can be written as a sum of positive squares in 2 ways, for example, as 139192804 + 32924644 = 11798^2 + 5738^2 .

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, 31865 + ... + 36872.

Almost surely, 2^172117448 is an apocalyptic number.

It is an amenable number.

172117448 is a deficient number, since it is larger than the sum of its proper divisors (151638532).

172117448 is a wasteful number, since it uses less digits than its factorization.

172117448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69056 (or 69052 counting only the distinct ones).

The product of its digits is 12544, while the sum is 35.

The square root of 172117448 is about 13119.3539475082. The cubic root of 172117448 is about 556.2563298863.

The spelling of 172117448 in words is "one hundred seventy-two million, one hundred seventeen thousand, four hundred forty-eight".