172724022 has 32 divisors (see below), whose sum is σ = 404035200. Its totient is φ = 54544104.

The previous prime is 172724011. The next prime is 172724053. The reversal of 172724022 is 220427271.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83148 + ... + 85199.

It is an arithmetic number, because the mean of its divisors is an integer number (12626100).

Almost surely, 2^172724022 is an apocalyptic number.

172724022 is an abundant number, since it is smaller than the sum of its proper divisors (231311178).

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

172724022 is a wasteful number, since it uses less digits than its factorization.

172724022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168377 (or 168371 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 172724022 is about 13142.4511412445. The cubic root of 172724022 is about 556.9090141225.

The spelling of 172724022 in words is "one hundred seventy-two million, seven hundred twenty-four thousand, twenty-two".