40520344 has 16 divisors (see below), whose sum is σ = 76078800. Its totient is φ = 20232672.

The previous prime is 40520323. The next prime is 40520357. The reversal of 40520344 is 44302504.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3694 + ... + 9730.

It is an arithmetic number, because the mean of its divisors is an integer number (4754925).

Almost surely, 2^40520344 is an apocalyptic number.

It is an amenable number.

40520344 is a deficient number, since it is larger than the sum of its proper divisors (35558456).

40520344 is a wasteful number, since it uses less digits than its factorization.

40520344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882 (or 6878 counting only the distinct ones).

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

The square root of 40520344 is about 6365.5592056001. The cubic root of 40520344 is about 343.4717645395.

Adding to 40520344 its reverse (44302504), we get a palindrome (84822848).

The spelling of 40520344 in words is "forty million, five hundred twenty thousand, three hundred forty-four".