28769903 has 4 divisors (see below), whose sum is σ = 28780728. Its totient is φ = 28759080.

The previous prime is 28769893. The next prime is 28769911. The reversal of 28769903 is 30996782.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28769903 - 2⁸ = 28769647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28769203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625 + ... + 7757.

It is an arithmetic number, because the mean of its divisors is an integer number (7195182).

Almost surely, 2^28769903 is an apocalyptic number.

28769903 is a deficient number, since it is larger than the sum of its proper divisors (10825).

28769903 is an equidigital number, since it uses as much as digits as its factorization.

28769903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10824.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 28769903 is about 5363.7582906018. The cubic root of 28769903 is about 306.4169597456.

The spelling of 28769903 in words is "twenty-eight million, seven hundred sixty-nine thousand, nine hundred three".