22032809 has 2 divisors, whose sum is σ = 22032810. Its totient is φ = 22032808.

The previous prime is 22032793. The next prime is 22032817. The reversal of 22032809 is 90823022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15642025 + 6390784 = 3955^2 + 2528^2 .

It is a cyclic number.

It is not a de Polignac number, because 22032809 - 2⁴ = 22032793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22032839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11016404 + 11016405.

It is an arithmetic number, because the mean of its divisors is an integer number (11016405).

Almost surely, 2^22032809 is an apocalyptic number.

It is an amenable number.

22032809 is a deficient number, since it is larger than the sum of its proper divisors (1).

22032809 is an equidigital number, since it uses as much as digits as its factorization.

22032809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 22032809 is about 4693.9119079932. The cubic root of 22032809 is about 280.3431549537.

The spelling of 22032809 in words is "twenty-two million, thirty-two thousand, eight hundred nine".