2781339 has 16 divisors (see below), whose sum is σ = 4095360. Its totient is φ = 1664960.

The previous prime is 2781329. The next prime is 2781343. The reversal of 2781339 is 9331872.

2781339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2781339 - 2⁵ = 2781307 is a prime.

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

2781339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2781329) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2464 + ... + 3410.

It is an arithmetic number, because the mean of its divisors is an integer number (255960).

2^2781339 is an apocalyptic number.

2781339 is a deficient number, since it is larger than the sum of its proper divisors (1314021).

2781339 is a wasteful number, since it uses less digits than its factorization.

2781339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050.

The product of its digits is 9072, while the sum is 33.

The square root of 2781339 is about 1667.7346911305. The cubic root of 2781339 is about 140.6321582529.

The spelling of 2781339 in words is "two million, seven hundred eighty-one thousand, three hundred thirty-nine".