7173222 has 64 divisors (see below), whose sum is σ = 17625600. Its totient is φ = 1900800.

The previous prime is 7173209. The next prime is 7173233. The reversal of 7173222 is 2223717.

It is a super-2 number, since 2×7173222² = 102910227722568, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 7173192 and 7173201.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 70972 + ... + 71072.

It is an arithmetic number, because the mean of its divisors is an integer number (275400).

Almost surely, 2^7173222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7173222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8812800).

7173222 is an abundant number, since it is smaller than the sum of its proper divisors (10452378).

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

7173222 is a wasteful number, since it uses less digits than its factorization.

7173222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221.

The product of its digits is 1176, while the sum is 24.

The square root of 7173222 is about 2678.2871391992. The cubic root of 7173222 is about 192.8581918030.

Adding to 7173222 its reverse (2223717), we get a palindrome (9396939).

The spelling of 7173222 in words is "seven million, one hundred seventy-three thousand, two hundred twenty-two".