28426579 has 4 divisors (see below), whose sum is σ = 28441600. Its totient is φ = 28411560.

The previous prime is 28426547. The next prime is 28426589. The reversal of 28426579 is 97562482.

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 28426579 - 2⁵ = 28426547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28426589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4179 + ... + 8620.

It is an arithmetic number, because the mean of its divisors is an integer number (7110400).

Almost surely, 2^28426579 is an apocalyptic number.

28426579 is a deficient number, since it is larger than the sum of its proper divisors (15021).

28426579 is a wasteful number, since it uses less digits than its factorization.

28426579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15020.

The product of its digits is 241920, while the sum is 43.

The square root of 28426579 is about 5331.6581848427. The cubic root of 28426579 is about 305.1932091232.

The spelling of 28426579 in words is "twenty-eight million, four hundred twenty-six thousand, five hundred seventy-nine".