2770856 has 48 divisors (see below), whose sum is σ = 6078240. Its totient is φ = 1172160.

The previous prime is 2770849. The next prime is 2770883. The reversal of 2770856 is 6580772.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74870 + ... + 74906.

It is an arithmetic number, because the mean of its divisors is an integer number (126630).

2^2770856 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 2770856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3039120).

2770856 is an abundant number, since it is smaller than the sum of its proper divisors (3307384).

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

2770856 is a wasteful number, since it uses less digits than its factorization.

2770856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 2770856 is about 1664.5888381219. The cubic root of 2770856 is about 140.4552526962.

The spelling of 2770856 in words is "two million, seven hundred seventy thousand, eight hundred fifty-six".