28613844257 has 8 divisors (see below), whose sum is σ = 30127832160. Its totient is φ = 27100656000.

The previous prime is 28613844229. The next prime is 28613844263. The reversal of 28613844257 is 75244831682.

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 28613844257 - 2²⁰ = 28612795681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28613844157) 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, 125744 + ... + 270257.

It is an arithmetic number, because the mean of its divisors is an integer number (3765979020).

Almost surely, 2^28613844257 is an apocalyptic number.

It is an amenable number.

28613844257 is a deficient number, since it is larger than the sum of its proper divisors (1513987903).

28613844257 is a wasteful number, since it uses less digits than its factorization.

28613844257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399823.

The product of its digits is 2580480, while the sum is 50.

The spelling of 28613844257 in words is "twenty-eight billion, six hundred thirteen million, eight hundred forty-four thousand, two hundred fifty-seven".