28005030503 has 8 divisors (see below), whose sum is σ = 29337441600. Its totient is φ = 26697067488.

The previous prime is 28005030481. The next prime is 28005030509. The reversal of 28005030503 is 30503050082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28005030503 - 2²⁴ = 27988253287 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 (28005030509) 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 7 ways as a sum of consecutive naturals, for example, 6109676 + ... + 6114257.

It is an arithmetic number, because the mean of its divisors is an integer number (3667180200).

Almost surely, 2^28005030503 is an apocalyptic number.

28005030503 is a deficient number, since it is larger than the sum of its proper divisors (1332411097).

28005030503 is a wasteful number, since it uses less digits than its factorization.

28005030503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12224041.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 28005030503 its reverse (30503050082), we get a palindrome (58508080585).

The spelling of 28005030503 in words is "twenty-eight billion, five million, thirty thousand, five hundred three".