22481217 has 24 divisors (see below), whose sum is σ = 36255648. Its totient is φ = 13305600.

The previous prime is 22481213. The next prime is 22481233. The reversal of 22481217 is 71218422.

It is not a de Polignac number, because 22481217 - 2² = 22481213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22481213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1617 + ... + 6897.

It is an arithmetic number, because the mean of its divisors is an integer number (1510652).

Almost surely, 2^22481217 is an apocalyptic number.

It is an amenable number.

22481217 is a deficient number, since it is larger than the sum of its proper divisors (13774431).

22481217 is a wasteful number, since it uses less digits than its factorization.

22481217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341 (or 5338 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 22481217 is about 4741.4361748314. The cubic root of 22481217 is about 282.2322291065.

Adding to 22481217 its reverse (71218422), we get a palindrome (93699639).

The spelling of 22481217 in words is "twenty-two million, four hundred eighty-one thousand, two hundred seventeen".