2881489 has 4 divisors (see below), whose sum is σ = 3103156. Its totient is φ = 2659824.

The previous prime is 2881471. The next prime is 2881499. The reversal of 2881489 is 9841882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 2560000 = 567^2 + 1600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2881489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2881409) 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, 110814 + ... + 110839.

It is an arithmetic number, because the mean of its divisors is an integer number (775789).

2^2881489 is an apocalyptic number.

It is an amenable number.

2881489 is a deficient number, since it is larger than the sum of its proper divisors (221667).

2881489 is a wasteful number, since it uses less digits than its factorization.

2881489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221666.

The product of its digits is 36864, while the sum is 40.

The square root of 2881489 is about 1697.4949189909. The cubic root of 2881489 is about 142.3002474650.

The spelling of 2881489 in words is "two million, eight hundred eighty-one thousand, four hundred eighty-nine".