28728857314443 has 48 divisors (see below), whose sum is σ = 46301414569344. Its totient is φ = 15698318388480.

The previous prime is 28728857314433. The next prime is 28728857314453. The reversal of 28728857314443 is 34441375882782.

It is an interprime number because it is at equal distance from previous prime (28728857314433) and next prime (28728857314453).

It is not a de Polignac number, because 28728857314443 - 2⁸ = 28728857314187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28728857314403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59659146 + ... + 60138767.

It is an arithmetic number, because the mean of its divisors is an integer number (964612803528).

Almost surely, 2^{28728857314443} is an apocalyptic number.

28728857314443 is a deficient number, since it is larger than the sum of its proper divisors (17572557254901).

28728857314443 is a wasteful number, since it uses less digits than its factorization.

28728857314443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119797996 (or 119797983 counting only the distinct ones).

The product of its digits is 289013760, while the sum is 66.

The spelling of 28728857314443 in words is "twenty-eight trillion, seven hundred twenty-eight billion, eight hundred fifty-seven million, three hundred fourteen thousand, four hundred forty-three".