40578728 has 16 divisors (see below), whose sum is σ = 80560980. Its totient is φ = 19095808.

The previous prime is 40578697. The next prime is 40578731. The reversal of 40578728 is 82787504.

40578728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40475044 + 103684 = 6362^2 + 322^2 .

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, 149051 + ... + 149322.

Almost surely, 2^40578728 is an apocalyptic number.

It is an amenable number.

40578728 is a deficient number, since it is larger than the sum of its proper divisors (39982252).

40578728 is a wasteful number, since it uses less digits than its factorization.

40578728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298396 (or 298392 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 40578728 is about 6370.1434834704. The cubic root of 40578728 is about 343.6366498781.

The spelling of 40578728 in words is "forty million, five hundred seventy-eight thousand, seven hundred twenty-eight".