28069579 has 2 divisors, whose sum is σ = 28069580. Its totient is φ = 28069578.

The previous prime is 28069553. The next prime is 28069589. The reversal of 28069579 is 97596082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28069579 - 2⁷ = 28069451 is a prime.

It is not a weakly prime, because it can be changed into another prime (28069529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14034789 + 14034790.

It is an arithmetic number, because the mean of its divisors is an integer number (14034790).

Almost surely, 2^28069579 is an apocalyptic number.

28069579 is a deficient number, since it is larger than the sum of its proper divisors (1).

28069579 is an equidigital number, since it uses as much as digits as its factorization.

28069579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 28069579 is about 5298.0731403030. The cubic root of 28069579 is about 303.9102163009.

The spelling of 28069579 in words is "twenty-eight million, sixty-nine thousand, five hundred seventy-nine".