40446318 has 16 divisors (see below), whose sum is σ = 88246656. Its totient is φ = 12256440.

The previous prime is 40446299. The next prime is 40446319. The reversal of 40446318 is 81364404.

40446318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40446319) 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 7 ways as a sum of consecutive naturals, for example, 306346 + ... + 306477.

It is an arithmetic number, because the mean of its divisors is an integer number (5515416).

Almost surely, 2^40446318 is an apocalyptic number.

40446318 is an abundant number, since it is smaller than the sum of its proper divisors (47800338).

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

40446318 is a wasteful number, since it uses less digits than its factorization.

40446318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612839.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 40446318 is about 6359.7419758981. The cubic root of 40446318 is about 343.2624759253.

The spelling of 40446318 in words is "forty million, four hundred forty-six thousand, three hundred eighteen".