40840056 has 48 divisors (see below), whose sum is σ = 110972160. Its totient is φ = 13568640.

The previous prime is 40840043. The next prime is 40840073. The reversal of 40840056 is 65004804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26836 + ... + 28316.

It is an arithmetic number, because the mean of its divisors is an integer number (2311920).

Almost surely, 2^40840056 is an apocalyptic number.

It is an amenable number.

40840056 is an abundant number, since it is smaller than the sum of its proper divisors (70132104).

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

40840056 is a wasteful number, since it uses less digits than its factorization.

40840056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40840056 is about 6390.6225048895. The cubic root of 40840056 is about 344.3727481097.

The spelling of 40840056 in words is "forty million, eight hundred forty thousand, fifty-six".