28228803 has 8 divisors (see below), whose sum is σ = 38936400. Its totient is φ = 18170208.

The previous prime is 28228801. The next prime is 28228831. The reversal of 28228803 is 30882282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28228803 - 2¹ = 28228801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28228801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162148 + ... + 162321.

It is an arithmetic number, because the mean of its divisors is an integer number (4867050).

Almost surely, 2^28228803 is an apocalyptic number.

28228803 is a deficient number, since it is larger than the sum of its proper divisors (10707597).

28228803 is a wasteful number, since it uses less digits than its factorization.

28228803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324501.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28228803 is about 5313.0784861509. The cubic root of 28228803 is about 304.4837742546.

The spelling of 28228803 in words is "twenty-eight million, two hundred twenty-eight thousand, eight hundred three".