2816281 has 8 divisors (see below), whose sum is σ = 3165120. Its totient is φ = 2486352.

The previous prime is 2816269. The next prime is 2816291. The reversal of 2816281 is 1826182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2816281 - 2¹¹ = 2814233 is a prime.

It is a super-2 number, since 2×2816281² = 15862877341922, which contains 22 as substring.

It is a Duffinian number.

2816281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2816221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4411 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (395640).

2^2816281 is an apocalyptic number.

It is an amenable number.

2816281 is a deficient number, since it is larger than the sum of its proper divisors (348839).

2816281 is a wasteful number, since it uses less digits than its factorization.

2816281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9455.

The product of its digits is 1536, while the sum is 28.

The square root of 2816281 is about 1678.1778809173. The cubic root of 2816281 is about 141.2186303585.

Subtracting from 2816281 its reverse (1826182), we obtain a palindrome (990099).

The spelling of 2816281 in words is "two million, eight hundred sixteen thousand, two hundred eighty-one".