40040328 has 16 divisors (see below), whose sum is σ = 100100880. Its totient is φ = 13346768.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040328 is 82304004.

It is a happy number.

40040328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 834150 + ... + 834197.

It is an arithmetic number, because the mean of its divisors is an integer number (6256305).

Almost surely, 2^40040328 is an apocalyptic number.

It is an amenable number.

40040328 is an abundant number, since it is smaller than the sum of its proper divisors (60060552).

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

40040328 is a wasteful number, since it uses less digits than its factorization.

40040328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668356 (or 1668352 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40040328 is about 6327.7427254907. The cubic root of 40040328 is about 342.1100839150.

The spelling of 40040328 in words is "forty million, forty thousand, three hundred twenty-eight".