2540330 has 16 divisors (see below), whose sum is σ = 4924584. Its totient is φ = 937920.

The previous prime is 2540323. The next prime is 2540339. The reversal of 2540330 is 330452.

It can be written as a sum of positive squares in 4 ways, for example, as 1256641 + 1283689 = 1121^2 + 1133^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2540299 and 2540308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9641 + ... + 9900.

2^2540330 is an apocalyptic number.

2540330 is a deficient number, since it is larger than the sum of its proper divisors (2384254).

2540330 is a wasteful number, since it uses less digits than its factorization.

2540330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 2540330 is about 1593.8412718963. The cubic root of 2540330 is about 136.4468075782.

Adding to 2540330 its reverse (330452), we get a palindrome (2870782).

The spelling of 2540330 in words is "two million, five hundred forty thousand, three hundred thirty".