2740340856 has 64 divisors (see below), whose sum is σ = 7528308480. Its totient is φ = 824334080.

The previous prime is 2740340839. The next prime is 2740340887. The reversal of 2740340856 is 6580430472.

It is a happy number.

It is a congruent number.

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, 1716 + ... + 74051.

It is an arithmetic number, because the mean of its divisors is an integer number (117629820).

Almost surely, 2^2740340856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2740340856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3764154240).

2740340856 is an abundant number, since it is smaller than the sum of its proper divisors (4787967624).

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

2740340856 is a wasteful number, since it uses less digits than its factorization.

2740340856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75924 (or 75920 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 2740340856 is about 52348.2650715379. The cubic root of 2740340856 is about 1399.3774197782.

The spelling of 2740340856 in words is "two billion, seven hundred forty million, three hundred forty thousand, eight hundred fifty-six".