2086281 has 6 divisors (see below), whose sum is σ = 3013530. Its totient is φ = 1390848.

The previous prime is 2086277. The next prime is 2086303. The reversal of 2086281 is 1826802.

It can be written as a sum of positive squares in only one way, i.e., 2005056 + 81225 = 1416^2 + 285^2 .

It is not a de Polignac number, because 2086281 - 2² = 2086277 is a prime.

It is a super-2 number, since 2×2086281² = 8705136821922, which contains 22 as substring.

2086281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2086211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115896 + ... + 115913.

It is an arithmetic number, because the mean of its divisors is an integer number (502255).

2^2086281 is an apocalyptic number.

It is an amenable number.

2086281 is a deficient number, since it is larger than the sum of its proper divisors (927249).

2086281 is a wasteful number, since it uses less digits than its factorization.

2086281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231815 (or 231812 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2086281 is about 1444.3964137314. The cubic root of 2086281 is about 127.7784456732.

The spelling of 2086281 in words is "two million, eighty-six thousand, two hundred eighty-one".