2881456 has 20 divisors (see below), whose sum is σ = 5661592. Its totient is φ = 1420416.

The previous prime is 2881453. The next prime is 2881471. The reversal of 2881456 is 6541882.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2881453) 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, 66 + ... + 2401.

2^2881456 is an apocalyptic number.

It is an amenable number.

2881456 is a deficient number, since it is larger than the sum of its proper divisors (2780136).

2881456 is a wasteful number, since it uses less digits than its factorization.

2881456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548 (or 2542 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 2881456 is about 1697.4851987573. The cubic root of 2881456 is about 142.2997042359.

It can be divided in two parts, 288145 and 6, that multiplied together give a triangular number (1728870 = T₁₈₅₉).

The spelling of 2881456 in words is "two million, eight hundred eighty-one thousand, four hundred fifty-six".