13728028533 has 4 divisors (see below), whose sum is σ = 18304038048. Its totient is φ = 9152019020.

The previous prime is 13728028529. The next prime is 13728028577. The reversal of 13728028533 is 33582082731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13728028533 - 2² = 13728028529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13728028733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288004753 + ... + 2288004758.

It is an arithmetic number, because the mean of its divisors is an integer number (4576009512).

Almost surely, 2^13728028533 is an apocalyptic number.

It is an amenable number.

13728028533 is a deficient number, since it is larger than the sum of its proper divisors (4576009515).

13728028533 is an equidigital number, since it uses as much as digits as its factorization.

13728028533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576009514.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 13728028533 in words is "thirteen billion, seven hundred twenty-eight million, twenty-eight thousand, five hundred thirty-three".