22634881 has 4 divisors (see below), whose sum is σ = 22645764. Its totient is φ = 22624000.

The previous prime is 22634879. The next prime is 22634893. The reversal of 22634881 is 18843622.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 9610000 + 13024881 = 3100^2 + 3609^2 .

It is a cyclic number.

It is not a de Polignac number, because 22634881 - 2¹ = 22634879 is a prime.

It is a super-2 number, since 2×22634881² = 1024675675768322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22634581) 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, 1240 + ... + 6841.

It is an arithmetic number, because the mean of its divisors is an integer number (5661441).

Almost surely, 2^22634881 is an apocalyptic number.

It is an amenable number.

22634881 is a deficient number, since it is larger than the sum of its proper divisors (10883).

22634881 is an equidigital number, since it uses as much as digits as its factorization.

22634881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10882.

The product of its digits is 18432, while the sum is 34.

The square root of 22634881 is about 4757.6129518909. The cubic root of 22634881 is about 282.8738090641.

The spelling of 22634881 in words is "twenty-two million, six hundred thirty-four thousand, eight hundred eighty-one".