40035728 has 20 divisors (see below), whose sum is σ = 79221120. Its totient is φ = 19591584.

The previous prime is 40035707. The next prime is 40035733. The reversal of 40035728 is 82753004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40035728.

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 3 ways as a sum of consecutive naturals, for example, 25868 + ... + 27371.

It is an arithmetic number, because the mean of its divisors is an integer number (3961056).

Almost surely, 2^40035728 is an apocalyptic number.

It is an amenable number.

40035728 is a deficient number, since it is larger than the sum of its proper divisors (39185392).

40035728 is a wasteful number, since it uses less digits than its factorization.

40035728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53294 (or 53288 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40035728 is about 6327.3792363031. The cubic root of 40035728 is about 342.0969824019.

The spelling of 40035728 in words is "forty million, thirty-five thousand, seven hundred twenty-eight".