28863733 has 2 divisors, whose sum is σ = 28863734. Its totient is φ = 28863732.

The previous prime is 28863727. The next prime is 28863743. The reversal of 28863733 is 33736882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16459249 + 12404484 = 4057^2 + 3522^2 .

It is a cyclic number.

It is not a de Polignac number, because 28863733 - 2²¹ = 26766581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28863743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14431866 + 14431867.

It is an arithmetic number, because the mean of its divisors is an integer number (14431867).

Almost surely, 2^28863733 is an apocalyptic number.

It is an amenable number.

28863733 is a deficient number, since it is larger than the sum of its proper divisors (1).

28863733 is an equidigital number, since it uses as much as digits as its factorization.

28863733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The square root of 28863733 is about 5372.4978362024. The cubic root of 28863733 is about 306.7497137770.

The spelling of 28863733 in words is "twenty-eight million, eight hundred sixty-three thousand, seven hundred thirty-three".