2781304 has 16 divisors (see below), whose sum is σ = 5293800. Its totient is φ = 1369632.

The previous prime is 2781301. The next prime is 2781307. The reversal of 2781304 is 4031872.

It is an interprime number because it is at equal distance from previous prime (2781301) and next prime (2781307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2059 + ... + 3130.

2^2781304 is an apocalyptic number.

It is an amenable number.

2781304 is a deficient number, since it is larger than the sum of its proper divisors (2512496).

2781304 is a wasteful number, since it uses less digits than its factorization.

2781304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262 (or 5258 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2781304 is about 1667.7241978217. The cubic root of 2781304 is about 140.6315683516.

The spelling of 2781304 in words is "two million, seven hundred eighty-one thousand, three hundred four".