172172262 has 32 divisors (see below), whose sum is σ = 363870720. Its totient is φ = 54159840.

The previous prime is 172172261. The next prime is 172172269. The reversal of 172172262 is 262271271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172172261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28108 + ... + 33680.

It is an arithmetic number, because the mean of its divisors is an integer number (11370960).

Almost surely, 2^172172262 is an apocalyptic number.

172172262 is an abundant number, since it is smaller than the sum of its proper divisors (191698458).

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

172172262 is a wasteful number, since it uses less digits than its factorization.

172172262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its digits is 4704, while the sum is 30.

The square root of 172172262 is about 13121.4428322498. The cubic root of 172172262 is about 556.3153736742.

Subtracting 172172262 from its reverse (262271271), we obtain a palindrome (90099009).

The spelling of 172172262 in words is "one hundred seventy-two million, one hundred seventy-two thousand, two hundred sixty-two".