2540812 has 6 divisors (see below), whose sum is σ = 4446428. Its totient is φ = 1270404.

The previous prime is 2540789. The next prime is 2540821. The reversal of 2540812 is 2180452.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317598 + ... + 317605.

2^2540812 is an apocalyptic number.

It is an amenable number.

2540812 is a deficient number, since it is larger than the sum of its proper divisors (1905616).

2540812 is a wasteful number, since it uses less digits than its factorization.

2540812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635207 (or 635205 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2540812 is about 1593.9924717514. The cubic root of 2540812 is about 136.4554367986.

Adding to 2540812 its product of nonzero digits (640), we get a palindrome (2541452).

The spelling of 2540812 in words is "two million, five hundred forty thousand, eight hundred twelve".