2785705540 has 12 divisors (see below), whose sum is σ = 5849981676. Its totient is φ = 1114282208.

The previous prime is 2785705523. The next prime is 2785705541. The reversal of 2785705540 is 455075872.

It can be written as a sum of positive squares in 2 ways, for example, as 599956036 + 2185749504 = 24494^2 + 46752^2 .

It is not an unprimeable number, because it can be changed into a prime (2785705541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69642619 + ... + 69642658.

It is an arithmetic number, because the mean of its divisors is an integer number (487498473).

Almost surely, 2^2785705540 is an apocalyptic number.

2785705540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785705540 is an abundant number, since it is smaller than the sum of its proper divisors (3064276136).

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

2785705540 is a wasteful number, since it uses less digits than its factorization.

2785705540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139285286 (or 139285284 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 43.

The square root of 2785705540 is about 52779.7834402530. The cubic root of 2785705540 is about 1407.0571453518.

The spelling of 2785705540 in words is "two billion, seven hundred eighty-five million, seven hundred five thousand, five hundred forty".