28226633 has 2 divisors, whose sum is σ = 28226634. Its totient is φ = 28226632.

The previous prime is 28226587. The next prime is 28226641. The reversal of 28226633 is 33662282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20178064 + 8048569 = 4492^2 + 2837^2 .

It is a cyclic number.

It is not a de Polignac number, because 28226633 - 2⁸ = 28226377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28226633.

It is not a weakly prime, because it can be changed into another prime (28226663) 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, 14113316 + 14113317.

It is an arithmetic number, because the mean of its divisors is an integer number (14113317).

Almost surely, 2^28226633 is an apocalyptic number.

It is an amenable number.

28226633 is a deficient number, since it is larger than the sum of its proper divisors (1).

28226633 is an equidigital number, since it uses as much as digits as its factorization.

28226633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 28226633 is about 5312.8742691692. The cubic root of 28226633 is about 304.4759719788.

The spelling of 28226633 in words is "twenty-eight million, two hundred twenty-six thousand, six hundred thirty-three".