28564679 has 8 divisors (see below), whose sum is σ = 33558672. Its totient is φ = 23970240.

The previous prime is 28564621. The next prime is 28564687. The reversal of 28564679 is 97646582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28564679 - 2¹⁶ = 28499143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28564079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99734 + ... + 100019.

It is an arithmetic number, because the mean of its divisors is an integer number (4194834).

Almost surely, 2^28564679 is an apocalyptic number.

28564679 is a deficient number, since it is larger than the sum of its proper divisors (4993993).

28564679 is a wasteful number, since it uses less digits than its factorization.

28564679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199777.

The product of its digits is 725760, while the sum is 47.

The square root of 28564679 is about 5344.5934363616. The cubic root of 28564679 is about 305.6866336472.

The spelling of 28564679 in words is "twenty-eight million, five hundred sixty-four thousand, six hundred seventy-nine".