40343856 has 120 divisors (see below), whose sum is σ = 128496240. Its totient is φ = 10838016.

The previous prime is 40343851. The next prime is 40343857. The reversal of 40343856 is 65834304.

It is not an unprimeable number, because it can be changed into a prime (40343851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39480 + ... + 40488.

It is an arithmetic number, because the mean of its divisors is an integer number (1070802).

Almost surely, 2^40343856 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 40343856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64248120).

40343856 is an abundant number, since it is smaller than the sum of its proper divisors (88152384).

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

40343856 is a wasteful number, since it uses less digits than its factorization.

40343856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 40343856 is about 6351.6813522090. The cubic root of 40343856 is about 342.9723703969.

The spelling of 40343856 in words is "forty million, three hundred forty-three thousand, eight hundred fifty-six".