172222568 has 64 divisors (see below), whose sum is σ = 388037760. Its totient is φ = 70108416.

The previous prime is 172222559. The next prime is 172222601. The reversal of 172222568 is 865222271.

It is a super-2 number, since 2×172222568² = 59321225857029248, which contains 22 as substring.

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, 88130 + ... + 90062.

It is an arithmetic number, because the mean of its divisors is an integer number (6063090).

Almost surely, 2^172222568 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 172222568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194018880).

172222568 is an abundant number, since it is smaller than the sum of its proper divisors (215815192).

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

172222568 is a wasteful number, since it uses less digits than its factorization.

172222568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026 (or 2022 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 172222568 is about 13123.3596308262. The cubic root of 172222568 is about 556.3695505697.

The spelling of 172222568 in words is "one hundred seventy-two million, two hundred twenty-two thousand, five hundred sixty-eight".