2881281 has 12 divisors (see below), whose sum is σ = 4160688. Its totient is φ = 1772784.

The previous prime is 2881273. The next prime is 2881289. The reversal of 2881281 is 1821882.

It is an interprime number because it is at equal distance from previous prime (2881273) and next prime (2881289).

It is not a de Polignac number, because 2881281 - 2³ = 2881273 is a prime.

It is a super-3 number, since 3×2881281³ = 71759284677615333123, which contains 333 as substring. Note that it is a super-d number also for d = 2.

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 11 ways as a sum of consecutive naturals, for example, 2335 + ... + 3348.

It is an arithmetic number, because the mean of its divisors is an integer number (346724).

2^2881281 is an apocalyptic number.

It is an amenable number.

2881281 is a deficient number, since it is larger than the sum of its proper divisors (1279407).

2881281 is a wasteful number, since it uses less digits than its factorization.

2881281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712 (or 5699 counting only the distinct ones).

The product of its digits is 2048, while the sum is 30.

The square root of 2881281 is about 1697.4336511334. The cubic root of 2881281 is about 142.2968234062.

The spelling of 2881281 in words is "two million, eight hundred eighty-one thousand, two hundred eighty-one".