28068506 has 16 divisors (see below), whose sum is σ = 42756768. Its totient is φ = 13818000.

The previous prime is 28068497. The next prime is 28068539. The reversal of 28068506 is 60586082.

It is a Curzon 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, 56921 + ... + 57411.

It is an arithmetic number, because the mean of its divisors is an integer number (2672298).

Almost surely, 2^28068506 is an apocalyptic number.

28068506 is a deficient number, since it is larger than the sum of its proper divisors (14688262).

28068506 is a wasteful number, since it uses less digits than its factorization.

28068506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 28068506 is about 5297.9718761050. The cubic root of 28068506 is about 303.9063437833.

It can be divided in two parts, 280 and 68506, that added together give a palindrome (68786).

The spelling of 28068506 in words is "twenty-eight million, sixty-eight thousand, five hundred six".