28224433 has 2 divisors, whose sum is σ = 28224434. Its totient is φ = 28224432.

The previous prime is 28224421. The next prime is 28224529. The reversal of 28224433 is 33442282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27804529 + 419904 = 5273^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 28224433 - 2⁵ = 28224401 is a prime.

It is not a weakly prime, because it can be changed into another prime (28224533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14112216 + 14112217.

It is an arithmetic number, because the mean of its divisors is an integer number (14112217).

Almost surely, 2^28224433 is an apocalyptic number.

It is an amenable number.

28224433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28224433 is an equidigital number, since it uses as much as digits as its factorization.

28224433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 28.

The square root of 28224433 is about 5312.6672208976. The cubic root of 28224433 is about 304.4680614292.

The spelling of 28224433 in words is "twenty-eight million, two hundred twenty-four thousand, four hundred thirty-three".