40816940 has 48 divisors (see below), whose sum is σ = 90810720. Its totient is φ = 15367680.

The previous prime is 40816939. The next prime is 40816981. The reversal of 40816940 is 4961804.

40816940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40816897 and 40816906.

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, 88310 + ... + 88770.

It is an arithmetic number, because the mean of its divisors is an integer number (1891890).

Almost surely, 2^40816940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40816940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45405360).

40816940 is an abundant number, since it is smaller than the sum of its proper divisors (49993780).

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

40816940 is a wasteful number, since it uses less digits than its factorization.

40816940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40816940 is about 6388.8136613929. The cubic root of 40816940 is about 344.3077627039.

The spelling of 40816940 in words is "forty million, eight hundred sixteen thousand, nine hundred forty".