28587265047 has 24 divisors (see below), whose sum is σ = 46145303568. Its totient is φ = 16903036800.

The previous prime is 28587265013. The next prime is 28587265051. The reversal of 28587265047 is 74056278582.

28587265047 is a `hidden beast` number, since 2 + 8 + 587 + 2 + 6 + 50 + 4 + 7 = 666.

It is not a de Polignac number, because 28587265047 - 2⁶ = 28587264983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28587264984 and 28587265002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28587265067) 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, 3517408 + ... + 3525525.

It is an arithmetic number, because the mean of its divisors is an integer number (1922720982).

Almost surely, 2^28587265047 is an apocalyptic number.

28587265047 is a deficient number, since it is larger than the sum of its proper divisors (17558038521).

28587265047 is a wasteful number, since it uses less digits than its factorization.

28587265047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042991 (or 7042988 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 28587265047 in words is "twenty-eight billion, five hundred eighty-seven million, two hundred sixty-five thousand, forty-seven".