28716028887443 has 4 divisors (see below), whose sum is σ = 28716934130808. Its totient is φ = 28715123644080.

The previous prime is 28716028887409. The next prime is 28716028887521. The reversal of 28716028887443 is 34478882061782.

It is a happy number.

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 28716028887443 - 2⁸ = 28716028887187 is a prime.

It is a super-2 number, since 2×28716028887443² (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 (28716028886443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452574098 + ... + 452637543.

It is an arithmetic number, because the mean of its divisors is an integer number (7179233532702).

Almost surely, 2^{28716028887443} is an apocalyptic number.

28716028887443 is a deficient number, since it is larger than the sum of its proper divisors (905243365).

28716028887443 is an equidigital number, since it uses as much as digits as its factorization.

28716028887443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905243364.

The product of its (nonzero) digits is 231211008, while the sum is 68.

The spelling of 28716028887443 in words is "twenty-eight trillion, seven hundred sixteen billion, twenty-eight million, eight hundred eighty-seven thousand, four hundred forty-three".