172123266 has 32 divisors (see below), whose sum is σ = 416568960. Its totient is φ = 46285056.

The previous prime is 172123247. The next prime is 172123267. The reversal of 172123266 is 662321271.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (172123267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119821 + ... + 121248.

It is an arithmetic number, because the mean of its divisors is an integer number (13017780).

Almost surely, 2^172123266 is an apocalyptic number.

172123266 is an abundant number, since it is smaller than the sum of its proper divisors (244445694).

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

172123266 is a wasteful number, since it uses less digits than its factorization.

172123266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241098.

The product of its digits is 6048, while the sum is 30.

The square root of 172123266 is about 13119.5756791140. The cubic root of 172123266 is about 556.2625974338.

The spelling of 172123266 in words is "one hundred seventy-two million, one hundred twenty-three thousand, two hundred sixty-six".