28871428873 has 8 divisors (see below), whose sum is σ = 33618483648. Its totient is φ = 24280015344.

The previous prime is 28871428867. The next prime is 28871428889. The reversal of 28871428873 is 37882417882.

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-28871428873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28871428273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38909911 + ... + 38910652.

It is an arithmetic number, because the mean of its divisors is an integer number (4202310456).

Almost surely, 2^28871428873 is an apocalyptic number.

It is an amenable number.

28871428873 is a deficient number, since it is larger than the sum of its proper divisors (4747054775).

28871428873 is an equidigital number, since it uses as much as digits as its factorization.

28871428873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77820623.

The product of its digits is 9633792, while the sum is 58.

The spelling of 28871428873 in words is "twenty-eight billion, eight hundred seventy-one million, four hundred twenty-eight thousand, eight hundred seventy-three".