2881784 has 8 divisors (see below), whose sum is σ = 5403360. Its totient is φ = 1440888.

The previous prime is 2881783. The next prime is 2881799. The reversal of 2881784 is 4871882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180104 + ... + 180119.

It is an arithmetic number, because the mean of its divisors is an integer number (675420).

2^2881784 is an apocalyptic number.

It is an amenable number.

2881784 is a deficient number, since it is larger than the sum of its proper divisors (2521576).

2881784 is a wasteful number, since it uses less digits than its factorization.

2881784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360229 (or 360225 counting only the distinct ones).

The product of its digits is 28672, while the sum is 38.

The square root of 2881784 is about 1697.5818095161. The cubic root of 2881784 is about 142.3051034198.

The spelling of 2881784 in words is "two million, eight hundred eighty-one thousand, seven hundred eighty-four".