40326540 has 48 divisors (see below), whose sum is σ = 113245440. Its totient is φ = 10722240.

The previous prime is 40326529. The next prime is 40326557. The reversal of 40326540 is 4562304.

40326540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40326540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25575 + ... + 27105.

It is an arithmetic number, because the mean of its divisors is an integer number (2359280).

Almost surely, 2^40326540 is an apocalyptic number.

It is an amenable number.

40326540 is an abundant number, since it is smaller than the sum of its proper divisors (72918900).

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

40326540 is a wasteful number, since it uses less digits than its factorization.

40326540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40326540 is about 6350.3181022686. The cubic root of 40326540 is about 342.9232942795.

Adding to 40326540 its reverse (4562304), we get a palindrome (44888844).

The spelling of 40326540 in words is "forty million, three hundred twenty-six thousand, five hundred forty".