2742856 has 16 divisors (see below), whose sum is σ = 5240700. Its totient is φ = 1345344.

The previous prime is 2742853. The next prime is 2742863. The reversal of 2742856 is 6582472.

2742856 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 2669956 + 72900 = 1634^2 + 270^2 .

It is not an unprimeable number, because it can be changed into a prime (2742853) 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, 2811 + ... + 3658.

2^2742856 is an apocalyptic number.

It is an amenable number.

2742856 is a deficient number, since it is larger than the sum of its proper divisors (2497844).

2742856 is a wasteful number, since it uses less digits than its factorization.

2742856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528 (or 6524 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 2742856 is about 1656.1569973888. The cubic root of 2742856 is about 139.9805415133.

The spelling of 2742856 in words is "two million, seven hundred forty-two thousand, eight hundred fifty-six".