28688120132003 has 4 divisors (see below), whose sum is σ = 28688727888240. Its totient is φ = 28687512375768.

The previous prime is 28688120131943. The next prime is 28688120132041. The reversal of 28688120132003 is 30023102188682.

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

It is a cyclic number.

It is not a de Polignac number, because 28688120132003 - 2²⁸ = 28687851696547 is a prime.

It is a super-2 number, since 2×28688120132003² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28688120132803) 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, 303807308 + ... + 303901721.

It is an arithmetic number, because the mean of its divisors is an integer number (7172181972060).

Almost surely, 2^{28688120132003} is an apocalyptic number.

28688120132003 is a deficient number, since it is larger than the sum of its proper divisors (607756237).

28688120132003 is an equidigital number, since it uses as much as digits as its factorization.

28688120132003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607756236.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 28688120132003 in words is "twenty-eight trillion, six hundred eighty-eight billion, one hundred twenty million, one hundred thirty-two thousand, three".