22444481 has 4 divisors (see below), whose sum is σ = 23420352. Its totient is φ = 21468612.

The previous prime is 22444441. The next prime is 22444483. The reversal of 22444481 is 18444422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22444481 - 2¹⁸ = 22182337 is a prime.

It is a super-2 number, since 2×22444481² = 1007509454718722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22444483) 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 3 ways as a sum of consecutive naturals, for example, 487901 + ... + 487946.

It is an arithmetic number, because the mean of its divisors is an integer number (5855088).

Almost surely, 2^22444481 is an apocalyptic number.

It is an amenable number.

22444481 is a deficient number, since it is larger than the sum of its proper divisors (975871).

22444481 is an equidigital number, since it uses as much as digits as its factorization.

22444481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975870.

The product of its digits is 8192, while the sum is 29.

The square root of 22444481 is about 4737.5606592423. The cubic root of 22444481 is about 282.0784157296.

The spelling of 22444481 in words is "twenty-two million, four hundred forty-four thousand, four hundred eighty-one".