28973834617 has 16 divisors (see below), whose sum is σ = 35666547840. Its totient is φ = 22920210432.

The previous prime is 28973834581. The next prime is 28973834633. The reversal of 28973834617 is 71643837982.

It is a de Polignac number, because none of the positive numbers 2^k-28973834617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28973834677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538809 + ... + 590137.

It is an arithmetic number, because the mean of its divisors is an integer number (2229159240).

Almost surely, 2^28973834617 is an apocalyptic number.

It is an amenable number.

28973834617 is a deficient number, since it is larger than the sum of its proper divisors (6692713223).

28973834617 is a wasteful number, since it uses less digits than its factorization.

28973834617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57552.

The product of its digits is 12192768, while the sum is 58.

The spelling of 28973834617 in words is "twenty-eight billion, nine hundred seventy-three million, eight hundred thirty-four thousand, six hundred seventeen".