28857177486 has 24 divisors (see below), whose sum is σ = 62567031384. Its totient is φ = 9612421200.

The previous prime is 28857177469. The next prime is 28857177487. The reversal of 28857177486 is 68477175882.

28857177486 is a `hidden beast` number, since 2 + 8 + 85 + 7 + 1 + 77 + 486 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28857177487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 526321 + ... + 578556.

It is an arithmetic number, because the mean of its divisors is an integer number (2606959641).

Almost surely, 2^28857177486 is an apocalyptic number.

28857177486 is an abundant number, since it is smaller than the sum of its proper divisors (33709853898).

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

28857177486 is a wasteful number, since it uses less digits than its factorization.

28857177486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106336 (or 1106333 counting only the distinct ones).

The product of its digits is 42147840, while the sum is 63.

The spelling of 28857177486 in words is "twenty-eight billion, eight hundred fifty-seven million, one hundred seventy-seven thousand, four hundred eighty-six".