2781426 has 16 divisors (see below), whose sum is σ = 5580000. Its totient is φ = 924288.

The previous prime is 2781397. The next prime is 2781433. The reversal of 2781426 is 6241872.

2781426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2781393 and 2781402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (348750).

2^2781426 is an apocalyptic number.

2781426 is an abundant number, since it is smaller than the sum of its proper divisors (2798574).

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

2781426 is a wasteful number, since it uses less digits than its factorization.

2781426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its digits is 5376, while the sum is 30.

The square root of 2781426 is about 1667.7607742119. The cubic root of 2781426 is about 140.6336245575.

The spelling of 2781426 in words is "two million, seven hundred eighty-one thousand, four hundred twenty-six".