2540440030 has 48 divisors (see below), whose sum is σ = 4880975760. Its totient is φ = 951755904.

The previous prime is 2540440027. The next prime is 2540440031. The reversal of 2540440030 is 300440452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2540439983 and 2540440010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540440031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317337 + ... + 325243.

It is an arithmetic number, because the mean of its divisors is an integer number (101686995).

Almost surely, 2^2540440030 is an apocalyptic number.

2540440030 is a deficient number, since it is larger than the sum of its proper divisors (2340535730).

2540440030 is a wasteful number, since it uses less digits than its factorization.

2540440030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041 (or 8022 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2540440030 is about 50402.7779988365. Note that the first 3 decimals coincide. The cubic root of 2540440030 is about 1364.4877753559.

Adding to 2540440030 its reverse (300440452), we get a palindrome (2840880482).

The spelling of 2540440030 in words is "two billion, five hundred forty million, four hundred forty thousand, thirty".