2240237 has 4 divisors (see below), whose sum is σ = 2252796. Its totient is φ = 2227680.

The previous prime is 2240213. The next prime is 2240267. The reversal of 2240237 is 7320422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7320422 = 2 ⋅3660211.

It can be written as a sum of positive squares in 2 ways, for example, as 111556 + 2128681 = 334^2 + 1459^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240237 - 2¹⁰ = 2239213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6008 + ... + 6369.

It is an arithmetic number, because the mean of its divisors is an integer number (563199).

2^2240237 is an apocalyptic number.

It is an amenable number.

2240237 is a deficient number, since it is larger than the sum of its proper divisors (12559).

2240237 is a wasteful number, since it uses less digits than its factorization.

2240237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12558.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 2240237 is about 1496.7421287583. The cubic root of 2240237 is about 130.8472667848.

Adding to 2240237 its reverse (7320422), we get a palindrome (9560659).

The spelling of 2240237 in words is "two million, two hundred forty thousand, two hundred thirty-seven".