28226579 has 4 divisors (see below), whose sum is σ = 29886984. Its totient is φ = 26566176.

The previous prime is 28226563. The next prime is 28226587. The reversal of 28226579 is 97562282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28226579 - 2⁴ = 28226563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28226479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830177 + ... + 830210.

It is an arithmetic number, because the mean of its divisors is an integer number (7471746).

Almost surely, 2^28226579 is an apocalyptic number.

28226579 is a deficient number, since it is larger than the sum of its proper divisors (1660405).

28226579 is a wasteful number, since it uses less digits than its factorization.

28226579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660404.

The product of its digits is 120960, while the sum is 41.

The square root of 28226579 is about 5312.8691871718. The cubic root of 28226579 is about 304.4757778157.

The spelling of 28226579 in words is "twenty-eight million, two hundred twenty-six thousand, five hundred seventy-nine".