40581968 has 20 divisors (see below), whose sum is σ = 89860320. Its totient is φ = 17392224.

The previous prime is 40581949. The next prime is 40582001. The reversal of 40581968 is 86918504.

40581968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40581968² = 3293792253506048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 181058 + ... + 181281.

It is an arithmetic number, because the mean of its divisors is an integer number (4493016).

Almost surely, 2^40581968 is an apocalyptic number.

It is an amenable number.

40581968 is an abundant number, since it is smaller than the sum of its proper divisors (49278352).

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

40581968 is a wasteful number, since it uses less digits than its factorization.

40581968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362354 (or 362348 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 40581968 is about 6370.3977897773. The cubic root of 40581968 is about 343.6457955000.

The spelling of 40581968 in words is "forty million, five hundred eighty-one thousand, nine hundred sixty-eight".