28394679 has 4 divisors (see below), whose sum is σ = 37859576. Its totient is φ = 18929784.

The previous prime is 28394671. The next prime is 28394687. The reversal of 28394679 is 97649382.

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

It is an interprime number because it is at equal distance from previous prime (28394671) and next prime (28394687).

It is not a de Polignac number, because 28394679 - 2³ = 28394671 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 (28394671) 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, 4732444 + ... + 4732449.

It is an arithmetic number, because the mean of its divisors is an integer number (9464894).

Almost surely, 2^28394679 is an apocalyptic number.

28394679 is a deficient number, since it is larger than the sum of its proper divisors (9464897).

28394679 is an equidigital number, since it uses as much as digits as its factorization.

28394679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464896.

The product of its digits is 653184, while the sum is 48.

The square root of 28394679 is about 5328.6657804745. The cubic root of 28394679 is about 305.0790048850.

The spelling of 28394679 in words is "twenty-eight million, three hundred ninety-four thousand, six hundred seventy-nine".