22003172 has 12 divisors (see below), whose sum is σ = 38591280. Its totient is φ = 10977096.

The previous prime is 22003129. The next prime is 22003181. The reversal of 22003172 is 27130022.

It is a super-3 number, since 3×22003172³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22003172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022 + ... + 7757.

It is an arithmetic number, because the mean of its divisors is an integer number (3215940).

Almost surely, 2^22003172 is an apocalyptic number.

It is an amenable number.

22003172 is a deficient number, since it is larger than the sum of its proper divisors (16588108).

22003172 is a wasteful number, since it uses less digits than its factorization.

22003172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12250 (or 12248 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 22003172 is about 4690.7538839722. The cubic root of 22003172 is about 280.2173991892.

Adding to 22003172 its reverse (27130022), we get a palindrome (49133194).

The spelling of 22003172 in words is "twenty-two million, three thousand, one hundred seventy-two".