28572857173 has 16 divisors (see below), whose sum is σ = 33786956160. Its totient is φ = 23642136000.

The previous prime is 28572857167. The next prime is 28572857179. The reversal of 28572857173 is 37175827582.

It is an interprime number because it is at equal distance from previous prime (28572857167) and next prime (28572857179).

It is not a de Polignac number, because 28572857173 - 2⁵ = 28572857141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572857179) 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, 1552123 + ... + 1570423.

It is an arithmetic number, because the mean of its divisors is an integer number (2111684760).

Almost surely, 2^28572857173 is an apocalyptic number.

It is an amenable number.

28572857173 is a deficient number, since it is larger than the sum of its proper divisors (5214098987).

28572857173 is a wasteful number, since it uses less digits than its factorization.

28572857173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26028.

The product of its digits is 6585600, while the sum is 55.

The spelling of 28572857173 in words is "twenty-eight billion, five hundred seventy-two million, eight hundred fifty-seven thousand, one hundred seventy-three".