22936729 has 2 divisors, whose sum is σ = 22936730. Its totient is φ = 22936728.

The previous prime is 22936691. The next prime is 22936733. The reversal of 22936729 is 92763922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 5631129 = 4160^2 + 2373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22936729 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22936691 and 22936700.

It is not a weakly prime, because it can be changed into another prime (22936829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11468364 + 11468365.

It is an arithmetic number, because the mean of its divisors is an integer number (11468365).

Almost surely, 2^22936729 is an apocalyptic number.

It is an amenable number.

22936729 is a deficient number, since it is larger than the sum of its proper divisors (1).

22936729 is an equidigital number, since it uses as much as digits as its factorization.

22936729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 22936729 is about 4789.2305227458. The cubic root of 22936729 is about 284.1256841375.

The spelling of 22936729 in words is "twenty-two million, nine hundred thirty-six thousand, seven hundred twenty-nine".