28586674557 has 24 divisors (see below), whose sum is σ = 47277029696. Its totient is φ = 16305359616.

The previous prime is 28586674541. The next prime is 28586674559. The reversal of 28586674557 is 75547668582.

28586674557 is a `hidden beast` number, since 2 + 8 + 5 + 8 + 6 + 6 + 74 + 557 = 666.

It is not a de Polignac number, because 28586674557 - 2⁴ = 28586674541 is a prime.

It is a super-2 number, since 2×28586674557² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28586674494 and 28586674503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28586674559) 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, 380308 + ... + 449229.

Almost surely, 2^28586674557 is an apocalyptic number.

It is an amenable number.

28586674557 is a deficient number, since it is larger than the sum of its proper divisors (18690355139).

28586674557 is a wasteful number, since it uses less digits than its factorization.

28586674557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830097 (or 830094 counting only the distinct ones).

The product of its digits is 112896000, while the sum is 63.

The spelling of 28586674557 in words is "twenty-eight billion, five hundred eighty-six million, six hundred seventy-four thousand, five hundred fifty-seven".