2540018 has 16 divisors (see below), whose sum is σ = 4131456. Its totient is φ = 1164240.

The previous prime is 2540011. The next prime is 2540033. The reversal of 2540018 is 8100452.

2540018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2540011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5255 + ... + 5717.

It is an arithmetic number, because the mean of its divisors is an integer number (258216).

2^2540018 is an apocalyptic number.

2540018 is a deficient number, since it is larger than the sum of its proper divisors (1591438).

2540018 is a wasteful number, since it uses less digits than its factorization.

2540018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2540018 is about 1593.7433921432. The cubic root of 2540018 is about 136.4412212768.

The spelling of 2540018 in words is "two million, five hundred forty thousand, eighteen".