40843656 has 192 divisors, whose sum is σ = 140356800. Its totient is φ = 10934784.

The previous prime is 40843651. The next prime is 40843661. The reversal of 40843656 is 65634804.

40843656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40843651) and next prime (40843661).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40843656.

It is not an unprimeable number, because it can be changed into a prime (40843651) 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 47 ways as a sum of consecutive naturals, for example, 179815 + ... + 180041.

It is an arithmetic number, because the mean of its divisors is an integer number (731025).

Almost surely, 2^40843656 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 40843656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70178400).

40843656 is an abundant number, since it is smaller than the sum of its proper divisors (99513144).

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

40843656 is a wasteful number, since it uses less digits than its factorization.

40843656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 40843656 is about 6390.9041613844. The cubic root of 40843656 is about 344.3828664885.

The spelling of 40843656 in words is "forty million, eight hundred forty-three thousand, six hundred fifty-six".