22806229 has 2 divisors, whose sum is σ = 22806230. Its totient is φ = 22806228.

The previous prime is 22806221. The next prime is 22806247. The reversal of 22806229 is 92260822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19158129 + 3648100 = 4377^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 22806229 - 2³ = 22806221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22806229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22806221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11403114 + 11403115.

It is an arithmetic number, because the mean of its divisors is an integer number (11403115).

Almost surely, 2^22806229 is an apocalyptic number.

It is an amenable number.

22806229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22806229 is an equidigital number, since it uses as much as digits as its factorization.

22806229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 22806229 is about 4775.5867702304. The cubic root of 22806229 is about 283.5858084810.

The spelling of 22806229 in words is "twenty-two million, eight hundred six thousand, two hundred twenty-nine".