28566243860 has 72 divisors (see below), whose sum is σ = 75358268160. Its totient is φ = 8903759040.

The previous prime is 28566243859. The next prime is 28566243863. The reversal of 28566243860 is 6834266582.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28566243799 and 28566243808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28566243863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 826220 + ... + 860099.

Almost surely, 2^28566243860 is an apocalyptic number.

28566243860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28566243860 is an abundant number, since it is smaller than the sum of its proper divisors (46792024300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28566243860 is a wasteful number, since it uses less digits than its factorization.

28566243860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686357 (or 1686344 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 28566243860 in words is "twenty-eight billion, five hundred sixty-six million, two hundred forty-three thousand, eight hundred sixty".