28894579 has 4 divisors (see below), whose sum is σ = 33022384. Its totient is φ = 24766776.

The previous prime is 28894571. The next prime is 28894589. The reversal of 28894579 is 97549882.

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 28894579 - 2³ = 28894571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28894571) 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, 2063892 + ... + 2063905.

It is an arithmetic number, because the mean of its divisors is an integer number (8255596).

Almost surely, 2^28894579 is an apocalyptic number.

28894579 is a deficient number, since it is larger than the sum of its proper divisors (4127805).

28894579 is an equidigital number, since it uses as much as digits as its factorization.

28894579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127804.

The product of its digits is 1451520, while the sum is 52.

The square root of 28894579 is about 5375.3678013695. The cubic root of 28894579 is about 306.8589469689.

The spelling of 28894579 in words is "twenty-eight million, eight hundred ninety-four thousand, five hundred seventy-nine".