40728448 has 16 divisors (see below), whose sum is σ = 81138960. Its totient is φ = 20364160.

The previous prime is 40728437. The next prime is 40728449. The reversal of 40728448 is 84482704.

40728448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40728449) 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 as a sum of consecutive naturals, namely, 158968 + ... + 159223.

It is an arithmetic number, because the mean of its divisors is an integer number (5071185).

Almost surely, 2^40728448 is an apocalyptic number.

It is an amenable number.

40728448 is a deficient number, since it is larger than the sum of its proper divisors (40410512).

40728448 is an equidigital number, since it uses as much as digits as its factorization.

40728448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318205 (or 318193 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 37.

The square root of 40728448 is about 6381.8843612212. The cubic root of 40728448 is about 344.0587604688.

The spelling of 40728448 in words is "forty million, seven hundred twenty-eight thousand, four hundred forty-eight".