22047427 has 2 divisors, whose sum is σ = 22047428. Its totient is φ = 22047426.

The previous prime is 22047401. The next prime is 22047437. The reversal of 22047427 is 72474022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22047427 - 2²³ = 13658819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22047395 and 22047404.

It is not a weakly prime, because it can be changed into another prime (22047437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11023713 + 11023714.

It is an arithmetic number, because the mean of its divisors is an integer number (11023714).

Almost surely, 2^22047427 is an apocalyptic number.

22047427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22047427 is an equidigital number, since it uses as much as digits as its factorization.

22047427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 22047427 is about 4695.4687731897. The cubic root of 22047427 is about 280.4051405479.

The spelling of 22047427 in words is "twenty-two million, forty-seven thousand, four hundred twenty-seven".