28006204 has 12 divisors (see below), whose sum is σ = 49097664. Its totient is φ = 13978304.

The previous prime is 28006193. The next prime is 28006213. The reversal of 28006204 is 40260082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3532 + ... + 8275.

It is an arithmetic number, because the mean of its divisors is an integer number (4091472).

Almost surely, 2^28006204 is an apocalyptic number.

It is an amenable number.

28006204 is a deficient number, since it is larger than the sum of its proper divisors (21091460).

28006204 is a wasteful number, since it uses less digits than its factorization.

28006204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404 (or 12402 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28006204 is about 5292.0888125579. The cubic root of 28006204 is about 303.6813229099.

Adding to 28006204 its reverse (40260082), we get a palindrome (68266286).

The spelling of 28006204 in words is "twenty-eight million, six thousand, two hundred four".