2690856 has 96 divisors (see below), whose sum is σ = 8798400. Its totient is φ = 725760.

The previous prime is 2690851. The next prime is 2690887. The reversal of 2690856 is 6580962.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2690856.

It is not an unprimeable number, because it can be changed into a prime (2690851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9436 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (91650).

2^2690856 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 2690856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4399200).

2690856 is an abundant number, since it is smaller than the sum of its proper divisors (6107544).

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

2690856 is a wasteful number, since it uses less digits than its factorization.

2690856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2690856 is about 1640.3828821345. The cubic root of 2690856 is about 139.0902920761.

The spelling of 2690856 in words is "two million, six hundred ninety thousand, eight hundred fifty-six".