28119803 has 4 divisors (see below), whose sum is σ = 28155288. Its totient is φ = 28084320.

The previous prime is 28119787. The next prime is 28119811. The reversal of 28119803 is 30891182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28119803 - 2⁴ = 28119787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28119803.

It is not an unprimeable number, because it can be changed into a prime (28119863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16526 + ... + 18147.

It is an arithmetic number, because the mean of its divisors is an integer number (7038822).

Almost surely, 2^28119803 is an apocalyptic number.

28119803 is a deficient number, since it is larger than the sum of its proper divisors (35485).

28119803 is an equidigital number, since it uses as much as digits as its factorization.

28119803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35484.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 28119803 is about 5302.8108584033. The cubic root of 28119803 is about 304.0913672448.

The spelling of 28119803 in words is "twenty-eight million, one hundred nineteen thousand, eight hundred three".