22089731 has 2 divisors, whose sum is σ = 22089732. Its totient is φ = 22089730.

The previous prime is 22089721. The next prime is 22089751. The reversal of 22089731 is 13798022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22089731 - 2⁶ = 22089667 is a prime.

It is a super-2 number, since 2×22089731² = 975912431304722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22089721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11044865 + 11044866.

It is an arithmetic number, because the mean of its divisors is an integer number (11044866).

Almost surely, 2^22089731 is an apocalyptic number.

22089731 is a deficient number, since it is larger than the sum of its proper divisors (1).

22089731 is an equidigital number, since it uses as much as digits as its factorization.

22089731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 22089731 is about 4699.9713828916. The cubic root of 22089731 is about 280.5843705346.

The spelling of 22089731 in words is "twenty-two million, eighty-nine thousand, seven hundred thirty-one".