172672722 has 40 divisors (see below), whose sum is σ = 407286000. Its totient is φ = 54527256.

The previous prime is 172672693. The next prime is 172672769. The reversal of 172672722 is 227276271.

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 19 ways as a sum of consecutive naturals, for example, 24972 + ... + 31127.

It is an arithmetic number, because the mean of its divisors is an integer number (10182150).

Almost surely, 2^172672722 is an apocalyptic number.

172672722 is an abundant number, since it is smaller than the sum of its proper divisors (234613278).

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

172672722 is a wasteful number, since it uses less digits than its factorization.

172672722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56132 (or 56123 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 172672722 is about 13140.4993055820. The cubic root of 172672722 is about 556.8538736331.

The spelling of 172672722 in words is "one hundred seventy-two million, six hundred seventy-two thousand, seven hundred twenty-two".