2239281 has 12 divisors (see below), whose sum is σ = 3528720. Its totient is φ = 1357080.

The previous prime is 2239253. The next prime is 2239301. The reversal of 2239281 is 1829322.

It is a happy number.

It is not a de Polignac number, because 2239281 - 2⁶ = 2239217 is a prime.

It is a super-2 number, since 2×2239281² = 10028758793922, which contains 22 as substring.

It is a Curzon number.

2239281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2239201) 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, 11211 + ... + 11408.

It is an arithmetic number, because the mean of its divisors is an integer number (294060).

2^2239281 is an apocalyptic number.

It is an amenable number.

2239281 is a deficient number, since it is larger than the sum of its proper divisors (1289439).

2239281 is a wasteful number, since it uses less digits than its factorization.

2239281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22636 (or 22633 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2239281 is about 1496.4227343903. The cubic root of 2239281 is about 130.8286515244.

Adding to 2239281 its product of digits (1728), we get a square (2241009 = 1497²).

The spelling of 2239281 in words is "two million, two hundred thirty-nine thousand, two hundred eighty-one".