40684338 has 24 divisors (see below), whose sum is σ = 90994176. Its totient is φ = 13123800.

The previous prime is 40684333. The next prime is 40684351. The reversal of 40684338 is 83348604.

40684338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40684331) 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 11 ways as a sum of consecutive naturals, for example, 35898 + ... + 37013.

It is an arithmetic number, because the mean of its divisors is an integer number (3791424).

Almost surely, 2^40684338 is an apocalyptic number.

40684338 is an abundant number, since it is smaller than the sum of its proper divisors (50309838).

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

40684338 is a wasteful number, since it uses less digits than its factorization.

40684338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72950 (or 72947 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 40684338 is about 6378.4275491692. The cubic root of 40684338 is about 343.9345073174.

The spelling of 40684338 in words is "forty million, six hundred eighty-four thousand, three hundred thirty-eight".