2272005 has 24 divisors (see below), whose sum is σ = 4076280. Its totient is φ = 1169280.

The previous prime is 2271989. The next prime is 2272013. The reversal of 2272005 is 5002722.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 2268036 = 63^2 + 1506^2 .

It is not a de Polignac number, because 2272005 - 2⁴ = 2271989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (169845).

2^2272005 is an apocalyptic number.

It is an amenable number.

2272005 is a deficient number, since it is larger than the sum of its proper divisors (1804275).

2272005 is a wasteful number, since it uses less digits than its factorization.

2272005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781 (or 1778 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 2272005 is about 1507.3171530902. The cubic root of 2272005 is about 131.4628654657.

Adding to 2272005 its reverse (5002722), we get a palindrome (7274727).

It can be divided in two parts, 22 and 72005, that added together give a palindrome (72027).

The spelling of 2272005 in words is "two million, two hundred seventy-two thousand, five".