40605744 has 80 divisors (see below), whose sum is σ = 109992960. Its totient is φ = 12894720.

The previous prime is 40605731. The next prime is 40605749. The reversal of 40605744 is 44750604.

It is not an unprimeable number, because it can be changed into a prime (40605749) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 92277 + ... + 92715.

It is an arithmetic number, because the mean of its divisors is an integer number (1374912).

Almost surely, 2^40605744 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 40605744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54996480).

40605744 is an abundant number, since it is smaller than the sum of its proper divisors (69387216).

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

40605744 is a wasteful number, since it uses less digits than its factorization.

40605744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 40605744 is about 6372.2636480296. The cubic root of 40605744 is about 343.7128936696.

The spelling of 40605744 in words is "forty million, six hundred five thousand, seven hundred forty-four".