22428149 has 2 divisors, whose sum is σ = 22428150. Its totient is φ = 22428148.

The previous prime is 22428143. The next prime is 22428157. The reversal of 22428149 is 94182422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18645124 + 3783025 = 4318^2 + 1945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22428149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22428143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214074 + 11214075.

It is an arithmetic number, because the mean of its divisors is an integer number (11214075).

Almost surely, 2^22428149 is an apocalyptic number.

It is an amenable number.

22428149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22428149 is an equidigital number, since it uses as much as digits as its factorization.

22428149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 22428149 is about 4735.8366737040. The cubic root of 22428149 is about 282.0099798624.

The spelling of 22428149 in words is "twenty-two million, four hundred twenty-eight thousand, one hundred forty-nine".