28005050280503 has 8 divisors (see below), whose sum is σ = 29222780575200. Its totient is φ = 26787329936928.

The previous prime is 28005050280479. The next prime is 28005050280509. The reversal of 28005050280503 is 30508205050082.

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 28005050280503 - 2³⁶ = 27936330803767 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 (28005050280509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3577793 + ... + 8295221.

It is an arithmetic number, because the mean of its divisors is an integer number (3652847571900).

Almost surely, 2^{28005050280503} is an apocalyptic number.

28005050280503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28005050280503 is a deficient number, since it is larger than the sum of its proper divisors (1217730294697).

28005050280503 is a wasteful number, since it uses less digits than its factorization.

28005050280503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975561.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 28005050280503 in words is "twenty-eight trillion, five billion, fifty million, two hundred eighty thousand, five hundred three".