28032502503 has 4 divisors (see below), whose sum is σ = 37376670008. Its totient is φ = 18688335000.

The previous prime is 28032502501. The next prime is 28032502513. The reversal of 28032502503 is 30520523082.

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

It is not a de Polignac number, because 28032502503 - 2¹ = 28032502501 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 (28032502501) 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, 4672083748 + ... + 4672083753.

It is an arithmetic number, because the mean of its divisors is an integer number (9344167502).

Almost surely, 2^28032502503 is an apocalyptic number.

28032502503 is a deficient number, since it is larger than the sum of its proper divisors (9344167505).

28032502503 is an equidigital number, since it uses as much as digits as its factorization.

28032502503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9344167504.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 28032502503 in words is "twenty-eight billion, thirty-two million, five hundred two thousand, five hundred three".