172164648 has 32 divisors (see below), whose sum is σ = 445255200. Its totient is φ = 55409088.

The previous prime is 172164623. The next prime is 172164649. The reversal of 172164648 is 846461271.

It is not an unprimeable number, because it can be changed into a prime (172164649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122986 + ... + 124377.

It is an arithmetic number, because the mean of its divisors is an integer number (13914225).

Almost surely, 2^172164648 is an apocalyptic number.

It is an amenable number.

172164648 is an abundant number, since it is smaller than the sum of its proper divisors (273090552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172164648 is a wasteful number, since it uses less digits than its factorization.

172164648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247401 (or 247397 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 172164648 is about 13121.1526932659. The cubic root of 172164648 is about 556.3071728803.

The spelling of 172164648 in words is "one hundred seventy-two million, one hundred sixty-four thousand, six hundred forty-eight".