28869003 has 12 divisors (see below), whose sum is σ = 41967328. Its totient is φ = 19122480.

The previous prime is 28868993. The next prime is 28869011. The reversal of 28869003 is 30096882.

It is not a de Polignac number, because 28869003 - 2¹⁷ = 28737931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28869013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8803 + ... + 11628.

Almost surely, 2^28869003 is an apocalyptic number.

28869003 is a deficient number, since it is larger than the sum of its proper divisors (13098325).

28869003 is a wasteful number, since it uses less digits than its factorization.

28869003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20594 (or 20591 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28869003 is about 5372.9882746941. The cubic root of 28869003 is about 306.7683816397.

The spelling of 28869003 in words is "twenty-eight million, eight hundred sixty-nine thousand, three".