28016806 has 16 divisors (see below), whose sum is σ = 43964928. Its totient is φ = 13365000.

The previous prime is 28016803. The next prime is 28016819. The reversal of 28016806 is 60861082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28016803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34141 + ... + 34951.

It is an arithmetic number, because the mean of its divisors is an integer number (2747808).

Almost surely, 2^28016806 is an apocalyptic number.

28016806 is a deficient number, since it is larger than the sum of its proper divisors (15948122).

28016806 is a wasteful number, since it uses less digits than its factorization.

28016806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 28016806 is about 5293.0904016463. The cubic root of 28016806 is about 303.7196385059.

Adding to 28016806 its reverse (60861082), we get a palindrome (88877888).

The spelling of 28016806 in words is "twenty-eight million, sixteen thousand, eight hundred six".