22947427 has 2 divisors, whose sum is σ = 22947428. Its totient is φ = 22947426.

The previous prime is 22947391. The next prime is 22947451. The reversal of 22947427 is 72474922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22947427 - 2¹⁵ = 22914659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22947227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11473713 + 11473714.

It is an arithmetic number, because the mean of its divisors is an integer number (11473714).

Almost surely, 2^22947427 is an apocalyptic number.

22947427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22947427 is an equidigital number, since it uses as much as digits as its factorization.

22947427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 22947427 is about 4790.3472734239. The cubic root of 22947427 is about 284.1698506230.

The spelling of 22947427 in words is "twenty-two million, nine hundred forty-seven thousand, four hundred twenty-seven".