28007045 has 16 divisors (see below), whose sum is σ = 38594880. Its totient is φ = 19296000.

The previous prime is 28007017. The next prime is 28007071. The reversal of 28007045 is 54070082.

It is not a de Polignac number, because 28007045 - 2⁸ = 28006789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12356 + ... + 14445.

It is an arithmetic number, because the mean of its divisors is an integer number (2412180).

Almost surely, 2^28007045 is an apocalyptic number.

It is an amenable number.

28007045 is a deficient number, since it is larger than the sum of its proper divisors (10587835).

28007045 is a wasteful number, since it uses less digits than its factorization.

28007045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26836.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 28007045 is about 5292.1682701895. The cubic root of 28007045 is about 303.6843626344.

The spelling of 28007045 in words is "twenty-eight million, seven thousand, forty-five".