2871144 has 24 divisors (see below), whose sum is σ = 7776210. Its totient is φ = 957024.

The previous prime is 2871139. The next prime is 2871173. The reversal of 2871144 is 4411782.

It can be written as a sum of positive squares in only one way, i.e., 2762244 + 108900 = 1662^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19867 + ... + 20010.

2^2871144 is an apocalyptic number.

2871144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2871144 is an abundant number, since it is smaller than the sum of its proper divisors (4905066).

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

2871144 is a wasteful number, since it uses less digits than its factorization.

2871144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39889 (or 39882 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 2871144 is about 1694.4450418942. The cubic root of 2871144 is about 142.1297498198.

It can be divided in two parts, 287 and 1144, that added together give a triangular number (1431 = T₅₃).

The spelling of 2871144 in words is "two million, eight hundred seventy-one thousand, one hundred forty-four".