28791733 has 2 divisors, whose sum is σ = 28791734. Its totient is φ = 28791732.

The previous prime is 28791731. The next prime is 28791743. The reversal of 28791733 is 33719782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 8514724 = 4503^2 + 2918^2 .

It is a cyclic number.

It is not a de Polignac number, because 28791733 - 2¹ = 28791731 is a prime.

Together with 28791731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28791731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14395866 + 14395867.

It is an arithmetic number, because the mean of its divisors is an integer number (14395867).

Almost surely, 2^28791733 is an apocalyptic number.

It is an amenable number.

28791733 is a deficient number, since it is larger than the sum of its proper divisors (1).

28791733 is an equidigital number, since it uses as much as digits as its factorization.

28791733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 28791733 is about 5365.7928584693. The cubic root of 28791733 is about 306.4944410763.

The spelling of 28791733 in words is "twenty-eight million, seven hundred ninety-one thousand, seven hundred thirty-three".