28874503 has 4 divisors (see below), whose sum is σ = 32999440. Its totient is φ = 24749568.

The previous prime is 28874501. The next prime is 28874539. The reversal of 28874503 is 30547882.

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 28874503 - 2¹ = 28874501 is a prime.

It is the 5374-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28874501) by changing a digit.

It is a nontrivial repunit in base 5373.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2062458 + ... + 2062471.

It is an arithmetic number, because the mean of its divisors is an integer number (8249860).

Almost surely, 2^28874503 is an apocalyptic number.

28874503 is a deficient number, since it is larger than the sum of its proper divisors (4124937).

28874503 is an equidigital number, since it uses as much as digits as its factorization.

28874503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124936.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28874503 is about 5373.5000697869. The cubic root of 28874503 is about 306.7878618063.

The spelling of 28874503 in words is "twenty-eight million, eight hundred seventy-four thousand, five hundred three".