28567579 has 2 divisors, whose sum is σ = 28567580. Its totient is φ = 28567578.

The previous prime is 28567573. The next prime is 28567597. The reversal of 28567579 is 97576582.

Together with next prime (28567597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28567579 - 2³ = 28567571 is a prime.

It is a super-2 number, since 2×28567579² = 1632213139842482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28567571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14283789 + 14283790.

It is an arithmetic number, because the mean of its divisors is an integer number (14283790).

Almost surely, 2^28567579 is an apocalyptic number.

28567579 is a deficient number, since it is larger than the sum of its proper divisors (1).

28567579 is an equidigital number, since it uses as much as digits as its factorization.

28567579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The square root of 28567579 is about 5344.8647316840. The cubic root of 28567579 is about 305.6969781388.

The spelling of 28567579 in words is "twenty-eight million, five hundred sixty-seven thousand, five hundred seventy-nine".