2781448 has 32 divisors (see below), whose sum is σ = 5688000. Its totient is φ = 1270080.

The previous prime is 2781433. The next prime is 2781451. The reversal of 2781448 is 8441872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4093 + ... + 4723.

It is an arithmetic number, because the mean of its divisors is an integer number (177750).

2^2781448 is an apocalyptic number.

It is an amenable number.

2781448 is an abundant number, since it is smaller than the sum of its proper divisors (2906552).

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

2781448 is a wasteful number, since it uses less digits than its factorization.

2781448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 681 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 2781448 is about 1667.7673698691. The cubic root of 2781448 is about 140.6339953423.

The spelling of 2781448 in words is "two million, seven hundred eighty-one thousand, four hundred forty-eight".