22489481 has 16 divisors (see below), whose sum is σ = 26448000. Its totient is φ = 19114704.

The previous prime is 22489457. The next prime is 22489507. The reversal of 22489481 is 18498422.

It is a de Polignac number, because none of the positive numbers 2^k-22489481 is a prime.

It is a super-2 number, since 2×22489481² = 1011553511298722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22489981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59150 + ... + 59528.

It is an arithmetic number, because the mean of its divisors is an integer number (1653000).

Almost surely, 2^22489481 is an apocalyptic number.

It is an amenable number.

22489481 is a deficient number, since it is larger than the sum of its proper divisors (3958519).

22489481 is an equidigital number, since it uses as much as digits as its factorization.

22489481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 559 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 22489481 is about 4742.3075606713. The cubic root of 22489481 is about 282.2668073266.

The spelling of 22489481 in words is "twenty-two million, four hundred eighty-nine thousand, four hundred eighty-one".