22682729 has 2 divisors, whose sum is σ = 22682730. Its totient is φ = 22682728.

The previous prime is 22682719. The next prime is 22682741. The reversal of 22682729 is 92728622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21576025 + 1106704 = 4645^2 + 1052^2 .

It is a cyclic number.

It is not a de Polignac number, because 22682729 - 2²⁰ = 21634153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22682692 and 22682701.

It is not a weakly prime, because it can be changed into another prime (22682719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11341364 + 11341365.

It is an arithmetic number, because the mean of its divisors is an integer number (11341365).

Almost surely, 2^22682729 is an apocalyptic number.

It is an amenable number.

22682729 is a deficient number, since it is larger than the sum of its proper divisors (1).

22682729 is an equidigital number, since it uses as much as digits as its factorization.

22682729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 22682729 is about 4762.6388693664. The cubic root of 22682729 is about 283.0729916149.

The spelling of 22682729 in words is "twenty-two million, six hundred eighty-two thousand, seven hundred twenty-nine".