28885433 has 2 divisors, whose sum is σ = 28885434. Its totient is φ = 28885432.

The previous prime is 28885403. The next prime is 28885471. The reversal of 28885433 is 33458882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27426169 + 1459264 = 5237^2 + 1208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28885433 is a prime.

It is not a weakly prime, because it can be changed into another prime (28885403) 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, 14442716 + 14442717.

It is an arithmetic number, because the mean of its divisors is an integer number (14442717).

Almost surely, 2^28885433 is an apocalyptic number.

It is an amenable number.

28885433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28885433 is an equidigital number, since it uses as much as digits as its factorization.

28885433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 41.

The square root of 28885433 is about 5374.5170015547. The cubic root of 28885433 is about 306.8265668687.

The spelling of 28885433 in words is "twenty-eight million, eight hundred eighty-five thousand, four hundred thirty-three".