28067845 has 16 divisors (see below), whose sum is σ = 38183040. Its totient is φ = 19635264.

The previous prime is 28067839. The next prime is 28067849. The reversal of 28067845 is 54876082.

It is a cyclic number.

It is not a de Polignac number, because 28067845 - 2⁷ = 28067717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28067798 and 28067807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28067849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10129 + ... + 12598.

It is an arithmetic number, because the mean of its divisors is an integer number (2386440).

Almost surely, 2^28067845 is an apocalyptic number.

It is an amenable number.

28067845 is a deficient number, since it is larger than the sum of its proper divisors (10115195).

28067845 is a wasteful number, since it uses less digits than its factorization.

28067845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22764.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28067845 is about 5297.9094933757. The cubic root of 28067845 is about 303.9039581478.

The spelling of 28067845 in words is "twenty-eight million, sixty-seven thousand, eight hundred forty-five".