40717856 has 72 divisors (see below), whose sum is σ = 88894260. Its totient is φ = 18292736.

The previous prime is 40717837. The next prime is 40717883. The reversal of 40717856 is 65871704.

It can be written as a sum of positive squares in 6 ways, for example, as 20611600 + 20106256 = 4540^2 + 4484^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 457460 + ... + 457548.

Almost surely, 2^40717856 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 40717856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44447130).

40717856 is an abundant number, since it is smaller than the sum of its proper divisors (48176404).

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

40717856 is a wasteful number, since it uses less digits than its factorization.

40717856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 40717856 is about 6381.0544583164. The cubic root of 40717856 is about 344.0289321258.

The spelling of 40717856 in words is "forty million, seven hundred seventeen thousand, eight hundred fifty-six".