28894443539 has 8 divisors (see below), whose sum is σ = 31344227040. Its totient is φ = 26477107776.

The previous prime is 28894443521. The next prime is 28894443577. The reversal of 28894443539 is 93534449882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28894443539 - 2³² = 24599476243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28894433539) 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, 8110079 + ... + 8113640.

It is an arithmetic number, because the mean of its divisors is an integer number (3918028380).

Almost surely, 2^28894443539 is an apocalyptic number.

28894443539 is a deficient number, since it is larger than the sum of its proper divisors (2449783501).

28894443539 is a wasteful number, since it uses less digits than its factorization.

28894443539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16223869.

The product of its digits is 29859840, while the sum is 59.

The spelling of 28894443539 in words is "twenty-eight billion, eight hundred ninety-four million, four hundred forty-three thousand, five hundred thirty-nine".