2681390 has 16 divisors (see below), whose sum is σ = 4957632. Its totient is φ = 1043424.

The previous prime is 2681389. The next prime is 2681417. The reversal of 2681390 is 931862.

2681390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 3254 + ... + 3993.

It is an arithmetic number, because the mean of its divisors is an integer number (309852).

2^2681390 is an apocalyptic number.

2681390 is a deficient number, since it is larger than the sum of its proper divisors (2276242).

2681390 is a wasteful number, since it uses less digits than its factorization.

2681390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2681390 is about 1637.4950381604. The cubic root of 2681390 is about 138.9270013332.

The spelling of 2681390 in words is "two million, six hundred eighty-one thousand, three hundred ninety".