2881143 has 16 divisors (see below), whose sum is σ = 4520160. Its totient is φ = 1807488.

The previous prime is 2881139. The next prime is 2881159. The reversal of 2881143 is 3411882.

It is not a de Polignac number, because 2881143 - 2² = 2881139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2680 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (282510).

2^2881143 is an apocalyptic number.

2881143 is a deficient number, since it is larger than the sum of its proper divisors (1639017).

2881143 is a wasteful number, since it uses less digits than its factorization.

2881143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303 (or 6297 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 2881143 is about 1697.3930010460. The cubic root of 2881143 is about 142.2945515839.

It can be divided in two parts, 288 and 1143, that added together give a triangular number (1431 = T₅₃).

The spelling of 2881143 in words is "two million, eight hundred eighty-one thousand, one hundred forty-three".