2785855520 has 96 divisors (see below), whose sum is σ = 7599650688. Its totient is φ = 945266688.

The previous prime is 2785855493. The next prime is 2785855537. The reversal of 2785855520 is 255585872.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95819 + ... + 121461.

It is an arithmetic number, because the mean of its divisors is an integer number (79163028).

Almost surely, 2^2785855520 is an apocalyptic number.

2785855520 is a gapful number since it is divisible by the number (20) 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 2785855520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3799825344).

2785855520 is an abundant number, since it is smaller than the sum of its proper divisors (4813795168).

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

2785855520 is a wasteful number, since it uses less digits than its factorization.

2785855520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25762 (or 25754 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 47.

The square root of 2785855520 is about 52781.2042302940. The cubic root of 2785855520 is about 1407.0823964825.

The spelling of 2785855520 in words is "two billion, seven hundred eighty-five million, eight hundred fifty-five thousand, five hundred twenty".