2871844 has 24 divisors (see below), whose sum is σ = 5375160. Its totient is φ = 1337856.

The previous prime is 2871833. The next prime is 2871853. The reversal of 2871844 is 4481782.

It can be written as a sum of positive squares in 4 ways, for example, as 82944 + 2788900 = 288^2 + 1670^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

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, 10542 + ... + 10810.

It is an arithmetic number, because the mean of its divisors is an integer number (223965).

2^2871844 is an apocalyptic number.

It is an amenable number.

2871844 is a deficient number, since it is larger than the sum of its proper divisors (2503316).

2871844 is a wasteful number, since it uses less digits than its factorization.

2871844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

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

The square root of 2871844 is about 1694.6515866101. The cubic root of 2871844 is about 142.1412995413.

The spelling of 2871844 in words is "two million, eight hundred seventy-one thousand, eight hundred forty-four".