22256329 has 2 divisors, whose sum is σ = 22256330. Its totient is φ = 22256328.

The previous prime is 22256309. The next prime is 22256347. The reversal of 22256329 is 92365222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 4108729 = 4260^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 22256329 - 2¹⁹ = 21732041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22256329.

It is not a weakly prime, because it can be changed into another prime (22256309) 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, 11128164 + 11128165.

It is an arithmetic number, because the mean of its divisors is an integer number (11128165).

Almost surely, 2^22256329 is an apocalyptic number.

It is an amenable number.

22256329 is a deficient number, since it is larger than the sum of its proper divisors (1).

22256329 is an equidigital number, since it uses as much as digits as its factorization.

22256329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 22256329 is about 4717.6613909860. The cubic root of 22256329 is about 281.2879820967.

The spelling of 22256329 in words is "twenty-two million, two hundred fifty-six thousand, three hundred twenty-nine".