172286672 has 20 divisors (see below), whose sum is σ = 334611396. Its totient is φ = 85935360.

The previous prime is 172286671. The next prime is 172286677. The reversal of 172286672 is 276682271.

It can be written as a sum of positive squares in 2 ways, for example, as 3182656 + 169104016 = 1784^2 + 13004^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172286671) by changing a digit.

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, 6053 + ... + 19524.

Almost surely, 2^172286672 is an apocalyptic number.

It is an amenable number.

172286672 is a deficient number, since it is larger than the sum of its proper divisors (162324724).

172286672 is a wasteful number, since it uses less digits than its factorization.

172286672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26006 (or 26000 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 172286672 is about 13125.8017659875. The cubic root of 172286672 is about 556.4385718946.

The spelling of 172286672 in words is "one hundred seventy-two million, two hundred eighty-six thousand, six hundred seventy-two".