172442244 has 48 divisors (see below), whose sum is σ = 439447680. Its totient is φ = 52308480.

The previous prime is 172442239. The next prime is 172442287. The reversal of 172442244 is 442244271.

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, 3292 + ... + 18860.

It is an arithmetic number, because the mean of its divisors is an integer number (9155160).

Almost surely, 2^172442244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172442244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219723840).

172442244 is an abundant number, since it is smaller than the sum of its proper divisors (267005436).

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

172442244 is a wasteful number, since it uses less digits than its factorization.

172442244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660 (or 15658 counting only the distinct ones).

The product of its digits is 14336, while the sum is 30.

The square root of 172442244 is about 13131.7266191465. The cubic root of 172442244 is about 556.6060064338.

The spelling of 172442244 in words is "one hundred seventy-two million, four hundred forty-two thousand, two hundred forty-four".