28093879 has 8 divisors (see below), whose sum is σ = 31980672. Its totient is φ = 24429240.

The previous prime is 28093823. The next prime is 28093903. The reversal of 28093879 is 97839082.

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

It is not a de Polignac number, because 28093879 - 2¹¹ = 28091831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28093279) 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, 55269 + ... + 55774.

It is an arithmetic number, because the mean of its divisors is an integer number (3997584).

Almost surely, 2^28093879 is an apocalyptic number.

28093879 is a deficient number, since it is larger than the sum of its proper divisors (3886793).

28093879 is a wasteful number, since it uses less digits than its factorization.

28093879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111077.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 28093879 is about 5300.3659307636. The cubic root of 28093879 is about 303.9978899611.

The spelling of 28093879 in words is "twenty-eight million, ninety-three thousand, eight hundred seventy-nine".