28736503321 has 8 divisors (see below), whose sum is σ = 28923935040. Its totient is φ = 28549127568.

The previous prime is 28736503309. The next prime is 28736503331. The reversal of 28736503321 is 12330563782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28736503321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28736503331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666140 + ... + 1683298.

It is an arithmetic number, because the mean of its divisors is an integer number (3615491880).

Almost surely, 2^28736503321 is an apocalyptic number.

It is an amenable number.

28736503321 is a deficient number, since it is larger than the sum of its proper divisors (187431719).

28736503321 is a wasteful number, since it uses less digits than its factorization.

28736503321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27983.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 28736503321 in words is "twenty-eight billion, seven hundred thirty-six million, five hundred three thousand, three hundred twenty-one".