28079786 has 16 divisors (see below), whose sum is σ = 48212736. Its totient is φ = 12015216.

The previous prime is 28079773. The next prime is 28079791. The reversal of 28079786 is 68797082.

It is a self number, because there is not a number n which added to its sum of digits gives 28079786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11135 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (3013296).

Almost surely, 2^28079786 is an apocalyptic number.

28079786 is a deficient number, since it is larger than the sum of its proper divisors (20132950).

28079786 is a wasteful number, since it uses less digits than its factorization.

28079786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 28079786 is about 5299.0363274845. The cubic root of 28079786 is about 303.9470490069.

The spelling of 28079786 in words is "twenty-eight million, seventy-nine thousand, seven hundred eighty-six".