22481849 has 4 divisors (see below), whose sum is σ = 24211236. Its totient is φ = 20752464.

The previous prime is 22481831. The next prime is 22481887. The reversal of 22481849 is 94818422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94818422 = 2 ⋅47409211.

It can be written as a sum of positive squares in 2 ways, for example, as 10627600 + 11854249 = 3260^2 + 3443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22481849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22481149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864674 + ... + 864699.

It is an arithmetic number, because the mean of its divisors is an integer number (6052809).

Almost surely, 2^22481849 is an apocalyptic number.

It is an amenable number.

22481849 is a deficient number, since it is larger than the sum of its proper divisors (1729387).

22481849 is a wasteful number, since it uses less digits than its factorization.

22481849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729386.

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

The square root of 22481849 is about 4741.5028208364. The cubic root of 22481849 is about 282.2348738194.

The spelling of 22481849 in words is "twenty-two million, four hundred eighty-one thousand, eight hundred forty-nine".