22481865 has 48 divisors (see below), whose sum is σ = 44928000. Its totient is φ = 10187136.

The previous prime is 22481831. The next prime is 22481887. The reversal of 22481865 is 56818422.

22481865 is a nontrivial binomial coefficient, being equal to C(6706, 2).

It is not a de Polignac number, because 22481865 - 2⁶ = 22481801 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 46696 + ... + 47174.

It is an arithmetic number, because the mean of its divisors is an integer number (936000).

Almost surely, 2^22481865 is an apocalyptic number.

22481865 is the 6705-th triangular number and also the 3353-rd hexagonal number.

It is an amenable number.

22481865 is a deficient number, since it is larger than the sum of its proper divisors (22446135).

22481865 is a wasteful number, since it uses less digits than its factorization.

22481865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 643 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 22481865 is about 4741.5045080649. The cubic root of 22481865 is about 282.2349407736.

The spelling of 22481865 in words is "twenty-two million, four hundred eighty-one thousand, eight hundred sixty-five".