28265678 has 16 divisors (see below), whose sum is σ = 48557184. Its totient is φ = 12088440.

The previous prime is 28265641. The next prime is 28265681. The reversal of 28265678 is 87656282.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 5813 + ... + 9503.

It is an arithmetic number, because the mean of its divisors is an integer number (3034824).

Almost surely, 2^28265678 is an apocalyptic number.

28265678 is a deficient number, since it is larger than the sum of its proper divisors (20291506).

28265678 is a wasteful number, since it uses less digits than its factorization.

28265678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247.

The product of its digits is 322560, while the sum is 44.

The square root of 28265678 is about 5316.5475639742. The cubic root of 28265678 is about 304.6162979254.

The spelling of 28265678 in words is "twenty-eight million, two hundred sixty-five thousand, six hundred seventy-eight".