2240540 has 24 divisors (see below), whose sum is σ = 4868640. Its totient is φ = 865088.

The previous prime is 2240533. The next prime is 2240551. The reversal of 2240540 is 450422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (202860).

2^2240540 is an apocalyptic number.

2240540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2240540 is an abundant number, since it is smaller than the sum of its proper divisors (2628100).

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

2240540 is a wasteful number, since it uses less digits than its factorization.

2240540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901 (or 3899 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2240540 is about 1496.8433451768. The cubic root of 2240540 is about 130.8531657045.

Adding to 2240540 its reverse (450422), we get a palindrome (2690962).

The spelling of 2240540 in words is "two million, two hundred forty thousand, five hundred forty".