2678856 has 48 divisors (see below), whose sum is σ = 7034160. Its totient is φ = 850080.

The previous prime is 2678839. The next prime is 2678873. The reversal of 2678856 is 6588762.

It is an interprime number because it is at equal distance from previous prime (2678839) and next prime (2678873).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12591 + ... + 12801.

It is an arithmetic number, because the mean of its divisors is an integer number (146545).

2^2678856 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 2678856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3517080).

2678856 is an abundant number, since it is smaller than the sum of its proper divisors (4355304).

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

2678856 is a wasteful number, since it uses less digits than its factorization.

2678856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 239 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2678856 is about 1636.7211124685. The cubic root of 2678856 is about 138.8832240415.

The spelling of 2678856 in words is "two million, six hundred seventy-eight thousand, eight hundred fifty-six".