2540838 has 16 divisors (see below), whose sum is σ = 5152176. Its totient is φ = 835200.

The previous prime is 2540831. The next prime is 2540849. The reversal of 2540838 is 8380452.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540831) 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, 2463 + ... + 3338.

It is an arithmetic number, because the mean of its divisors is an integer number (322011).

2^2540838 is an apocalyptic number.

2540838 is an abundant number, since it is smaller than the sum of its proper divisors (2611338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2540838 is a wasteful number, since it uses less digits than its factorization.

2540838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2540838 is about 1594.0006273524. Note that the first 3 decimals coincide. The cubic root of 2540838 is about 136.4559022442.

The spelling of 2540838 in words is "two million, five hundred forty thousand, eight hundred thirty-eight".