2587804856 has 96 divisors (see below), whose sum is σ = 6274961280. Its totient is φ = 990662400.

The previous prime is 2587804847. The next prime is 2587804859. The reversal of 2587804856 is 6584087852.

2587804856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2587804798 and 2587804807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587804859) 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, 149786 + ... + 166166.

It is an arithmetic number, because the mean of its divisors is an integer number (65364180).

Almost surely, 2^2587804856 is an apocalyptic number.

2587804856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2587804856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3137480640).

2587804856 is an abundant number, since it is smaller than the sum of its proper divisors (3687156424).

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

2587804856 is a wasteful number, since it uses less digits than its factorization.

2587804856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16445 (or 16434 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 53.

The square root of 2587804856 is about 50870.4713561807. The cubic root of 2587804856 is about 1372.9156043013.

The spelling of 2587804856 in words is "two billion, five hundred eighty-seven million, eight hundred four thousand, eight hundred fifty-six".