28573281847 has 16 divisors (see below), whose sum is σ = 31241613312. Its totient is φ = 25916829120.

The previous prime is 28573281713. The next prime is 28573281859. The reversal of 28573281847 is 74818237582.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28573281847 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 (28573282847) 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, 17139708 + ... + 17141374.

It is an arithmetic number, because the mean of its divisors is an integer number (1952600832).

Almost surely, 2^28573281847 is an apocalyptic number.

28573281847 is a deficient number, since it is larger than the sum of its proper divisors (2668331465).

28573281847 is a wasteful number, since it uses less digits than its factorization.

28573281847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278.

The product of its digits is 6021120, while the sum is 55.

The spelling of 28573281847 in words is "twenty-eight billion, five hundred seventy-three million, two hundred eighty-one thousand, eight hundred forty-seven".