2240005 has 24 divisors (see below), whose sum is σ = 3044952. Its totient is φ = 1575936.

The previous prime is 2240003. The next prime is 2240023. The reversal of 2240005 is 5000422.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 521284 + 1718721 = 722^2 + 1311^2 .

It is not a de Polignac number, because 2240005 - 2¹ = 2240003 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 (2240003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30649 + ... + 30721.

It is an arithmetic number, because the mean of its divisors is an integer number (126873).

2^2240005 is an apocalyptic number.

It is an amenable number.

2240005 is a deficient number, since it is larger than the sum of its proper divisors (804947).

2240005 is a wasteful number, since it uses less digits than its factorization.

2240005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 2240005 is about 1496.6646250914. The cubic root of 2240005 is about 130.8427497606.

Adding to 2240005 its reverse (5000422), we get a palindrome (7240427).

The spelling of 2240005 in words is "two million, two hundred forty thousand, five".