28572508317 has 8 divisors (see below), whose sum is σ = 38099179360. Its totient is φ = 19047088080.

The previous prime is 28572508309. The next prime is 28572508337. The reversal of 28572508317 is 71380527582.

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

It is not a de Polignac number, because 28572508317 - 2³ = 28572508309 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 (28572508337) 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, 258034 + ... + 351747.

It is an arithmetic number, because the mean of its divisors is an integer number (4762397420).

Almost surely, 2^28572508317 is an apocalyptic number.

It is an amenable number.

28572508317 is a deficient number, since it is larger than the sum of its proper divisors (9526671043).

28572508317 is a wasteful number, since it uses less digits than its factorization.

28572508317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625403.

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 28572508317 in words is "twenty-eight billion, five hundred seventy-two million, five hundred eight thousand, three hundred seventeen".