2881989 has 24 divisors (see below), whose sum is σ = 4653792. Its totient is φ = 1703520.

The previous prime is 2881951. The next prime is 2882021. The reversal of 2881989 is 9891882.

It is not a de Polignac number, because 2881989 - 2⁷ = 2881861 is a prime.

It is a super-2 number, since 2×2881989² = 16611721192242, which contains 22 as substring.

2881989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3919 + ... + 4595.

It is an arithmetic number, because the mean of its divisors is an integer number (193908).

2^2881989 is an apocalyptic number.

It is an amenable number.

2881989 is a deficient number, since it is larger than the sum of its proper divisors (1771803).

2881989 is a wasteful number, since it uses less digits than its factorization.

2881989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 734 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 2881989 is about 1697.6421884484. The cubic root of 2881989 is about 142.3084777016.

The spelling of 2881989 in words is "two million, eight hundred eighty-one thousand, nine hundred eighty-nine".