22404427 has 2 divisors, whose sum is σ = 22404428. Its totient is φ = 22404426.

The previous prime is 22404391. The next prime is 22404463. The reversal of 22404427 is 72440422.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (22404391) and next prime (22404463).

It is a cyclic number.

It is not a de Polignac number, because 22404427 - 2⁷ = 22404299 is a prime.

It is not a weakly prime, because it can be changed into another prime (22404497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202213 + 11202214.

It is an arithmetic number, because the mean of its divisors is an integer number (11202214).

Almost surely, 2^22404427 is an apocalyptic number.

22404427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22404427 is an equidigital number, since it uses as much as digits as its factorization.

22404427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 22404427 is about 4733.3314906100. The cubic root of 22404427 is about 281.9105185305.

Adding to 22404427 its reverse (72440422), we get a palindrome (94844849).

The spelling of 22404427 in words is "twenty-two million, four hundred four thousand, four hundred twenty-seven".