22044691 has 4 divisors (see below), whose sum is σ = 22099000. Its totient is φ = 21990384.

The previous prime is 22044683. The next prime is 22044697. The reversal of 22044691 is 19644022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22044691 - 2³ = 22044683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22044697) 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, 26541 + ... + 27358.

It is an arithmetic number, because the mean of its divisors is an integer number (5524750).

Almost surely, 2^22044691 is an apocalyptic number.

22044691 is a deficient number, since it is larger than the sum of its proper divisors (54309).

22044691 is an equidigital number, since it uses as much as digits as its factorization.

22044691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54308.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 22044691 is about 4695.1774194379. The cubic root of 22044691 is about 280.3935410053.

The spelling of 22044691 in words is "twenty-two million, forty-four thousand, six hundred ninety-one".