28228382 has 32 divisors (see below), whose sum is σ = 53340672. Its totient is φ = 10904544.

The previous prime is 28228379. The next prime is 28228391. The reversal of 28228382 is 28382282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6023 + ... + 9629.

It is an arithmetic number, because the mean of its divisors is an integer number (1666896).

Almost surely, 2^28228382 is an apocalyptic number.

28228382 is a deficient number, since it is larger than the sum of its proper divisors (25112290).

28228382 is a wasteful number, since it uses less digits than its factorization.

28228382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672.

The product of its digits is 24576, while the sum is 35.

The square root of 28228382 is about 5313.0388667880. The cubic root of 28228382 is about 304.4822605725.

The spelling of 28228382 in words is "twenty-eight million, two hundred twenty-eight thousand, three hundred eighty-two".