28285083257 has 8 divisors (see below), whose sum is σ = 28633414656. Its totient is φ = 27938714832.

The previous prime is 28285083247. The next prime is 28285083263. The reversal of 28285083257 is 75238058282.

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 28285083257 - 2⁶ = 28285083193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28285083247) 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, 461738 + ... + 519395.

It is an arithmetic number, because the mean of its divisors is an integer number (3579176832).

Almost surely, 2^28285083257 is an apocalyptic number.

It is an amenable number.

28285083257 is a deficient number, since it is larger than the sum of its proper divisors (348331399).

28285083257 is a wasteful number, since it uses less digits than its factorization.

28285083257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981487.

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 28285083257 in words is "twenty-eight billion, two hundred eighty-five million, eighty-three thousand, two hundred fifty-seven".