2781330 has 32 divisors (see below), whose sum is σ = 6761664. Its totient is φ = 732096.

The previous prime is 2781329. The next prime is 2781343. The reversal of 2781330 is 331872.

It is a self number, because there is not a number n which added to its sum of digits gives 2781330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1932 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (211302).

2^2781330 is an apocalyptic number.

2781330 is an abundant number, since it is smaller than the sum of its proper divisors (3980334).

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

2781330 is a wasteful number, since it uses less digits than its factorization.

2781330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2781330 is about 1667.7319928574. The cubic root of 2781330 is about 140.6320065645.

The spelling of 2781330 in words is "two million, seven hundred eighty-one thousand, three hundred thirty".