40716081 has 32 divisors (see below), whose sum is σ = 69242880. Its totient is φ = 23163408.

The previous prime is 40716061. The next prime is 40716083. The reversal of 40716081 is 18061704.

It is a happy number.

40716081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40716081 - 2⁶ = 40716017 is a prime.

It is a super-2 number, since 2×40716081² = 3315598503997122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40716083) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 69070 + ... + 69656.

It is an arithmetic number, because the mean of its divisors is an integer number (2163840).

Almost surely, 2^40716081 is an apocalyptic number.

It is an amenable number.

40716081 is a deficient number, since it is larger than the sum of its proper divisors (28526799).

40716081 is a wasteful number, since it uses less digits than its factorization.

40716081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 40716081 is about 6380.9153732047. The cubic root of 40716081 is about 344.0239330068.

Adding to 40716081 its reverse (18061704), we get a palindrome (58777785).

The spelling of 40716081 in words is "forty million, seven hundred sixteen thousand, eighty-one".