28888333 has 2 divisors, whose sum is σ = 28888334. Its totient is φ = 28888332.

The previous prime is 28888331. The next prime is 28888351. The reversal of 28888333 is 33388882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25270729 + 3617604 = 5027^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 28888333 - 2¹ = 28888331 is a prime.

Together with 28888331, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28888333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28888331) 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, 14444166 + 14444167.

It is an arithmetic number, because the mean of its divisors is an integer number (14444167).

Almost surely, 2^28888333 is an apocalyptic number.

It is an amenable number.

28888333 is a deficient number, since it is larger than the sum of its proper divisors (1).

28888333 is an equidigital number, since it uses as much as digits as its factorization.

28888333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 43.

The square root of 28888333 is about 5374.7867864688. The cubic root of 28888333 is about 306.8368346424.

The spelling of 28888333 in words is "twenty-eight million, eight hundred eighty-eight thousand, three hundred thirty-three".