172196844 has 24 divisors (see below), whose sum is σ = 406309680. Its totient is φ = 56753664.

The previous prime is 172196833. The next prime is 172196879. The reversal of 172196844 is 448691271.

It is a junction number, because it is equal to n+sod(n) for n = 172196796 and 172196805.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 79549 + ... + 81684.

It is an arithmetic number, because the mean of its divisors is an integer number (16929570).

Almost surely, 2^172196844 is an apocalyptic number.

It is an amenable number.

172196844 is an abundant number, since it is smaller than the sum of its proper divisors (234112836).

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

172196844 is a wasteful number, since it uses less digits than its factorization.

172196844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161329 (or 161327 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 172196844 is about 13122.3795098298. The cubic root of 172196844 is about 556.3418485035.

The spelling of 172196844 in words is "one hundred seventy-two million, one hundred ninety-six thousand, eight hundred forty-four".