28766713 has 2 divisors, whose sum is σ = 28766714. Its totient is φ = 28766712.

The previous prime is 28766711. The next prime is 28766783. The reversal of 28766713 is 31766782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19784704 + 8982009 = 4448^2 + 2997^2 .

It is a cyclic number.

It is not a de Polignac number, because 28766713 - 2¹ = 28766711 is a prime.

Together with 28766711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28766711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14383356 + 14383357.

It is an arithmetic number, because the mean of its divisors is an integer number (14383357).

Almost surely, 2^28766713 is an apocalyptic number.

It is an amenable number.

28766713 is a deficient number, since it is larger than the sum of its proper divisors (1).

28766713 is an equidigital number, since it uses as much as digits as its factorization.

28766713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 28766713 is about 5363.4609162368. The cubic root of 28766713 is about 306.4056341805.

The spelling of 28766713 in words is "twenty-eight million, seven hundred sixty-six thousand, seven hundred thirteen".