22438811 has 4 divisors (see below), whose sum is σ = 22449624. Its totient is φ = 22428000.

The previous prime is 22438783. The next prime is 22438817. The reversal of 22438811 is 11883422.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11883422 = 2 ⋅5941711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22438811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22438817) 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, 1205 + ... + 6806.

It is an arithmetic number, because the mean of its divisors is an integer number (5612406).

Almost surely, 2^22438811 is an apocalyptic number.

22438811 is a deficient number, since it is larger than the sum of its proper divisors (10813).

22438811 is an equidigital number, since it uses as much as digits as its factorization.

22438811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10812.

The product of its digits is 3072, while the sum is 29.

The square root of 22438811 is about 4736.9622122200. The cubic root of 22438811 is about 282.0546605309.

The spelling of 22438811 in words is "twenty-two million, four hundred thirty-eight thousand, eight hundred eleven".