2681844 has 36 divisors (see below), whose sum is σ = 6881952. Its totient is φ = 812240.

The previous prime is 2681843. The next prime is 2681849. The reversal of 2681844 is 4481862.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529 + ... + 2375.

2^2681844 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 2681844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3440976).

2681844 is an abundant number, since it is smaller than the sum of its proper divisors (4200108).

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

2681844 is a wasteful number, since it uses less digits than its factorization.

2681844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 1863 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 2681844 is about 1637.6336586673. The cubic root of 2681844 is about 138.9348417070.

It can be divided in two parts, 26818 and 44, that added together give a palindrome (26862).

The spelling of 2681844 in words is "two million, six hundred eighty-one thousand, eight hundred forty-four".