2206281 has 16 divisors (see below), whose sum is σ = 3667968. Its totient is φ = 1146000.

The previous prime is 2206249. The next prime is 2206283. The reversal of 2206281 is 1826022.

It is not a de Polignac number, because 2206281 - 2⁵ = 2206249 is a prime.

It is a super-2 number, since 2×2206281² = 9735351701922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2206283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4545 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (229248).

2^2206281 is an apocalyptic number.

2206281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2206281 is a deficient number, since it is larger than the sum of its proper divisors (1461687).

2206281 is a wasteful number, since it uses less digits than its factorization.

2206281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2206281 is about 1485.3555130002. The cubic root of 2206281 is about 130.1828000337.

The spelling of 2206281 in words is "two million, two hundred six thousand, two hundred eighty-one".