22481641 has 24 divisors (see below), whose sum is σ = 29158920. Its totient is φ = 17160192.

The previous prime is 22481639. The next prime is 22481659. The reversal of 22481641 is 14618422.

It can be written as a sum of positive squares in 4 ways, for example, as 354025 + 22127616 = 595^2 + 4704^2 .

It is not a de Polignac number, because 22481641 - 2¹ = 22481639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22481621) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 17865 + ... + 19081.

It is an arithmetic number, because the mean of its divisors is an integer number (1214955).

Almost surely, 2^22481641 is an apocalyptic number.

It is an amenable number.

22481641 is a deficient number, since it is larger than the sum of its proper divisors (6677279).

22481641 is a wasteful number, since it uses less digits than its factorization.

22481641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1266 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 22481641 is about 4741.4808868116. The cubic root of 22481641 is about 282.2340034131.

The spelling of 22481641 in words is "twenty-two million, four hundred eighty-one thousand, six hundred forty-one".