40285388 has 24 divisors (see below), whose sum is σ = 82825680. Its totient is φ = 16902720.

The previous prime is 40285387. The next prime is 40285403. The reversal of 40285388 is 88358204.

40285388 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 (40285381) 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 7 ways as a sum of consecutive naturals, for example, 34643 + ... + 35786.

It is an arithmetic number, because the mean of its divisors is an integer number (3451070).

Almost surely, 2^40285388 is an apocalyptic number.

It is an amenable number.

40285388 is an abundant number, since it is smaller than the sum of its proper divisors (42540292).

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

40285388 is a wasteful number, since it uses less digits than its factorization.

40285388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70457 (or 70455 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 40285388 is about 6347.0771225817. The cubic root of 40285388 is about 342.8066070026.

The spelling of 40285388 in words is "forty million, two hundred eighty-five thousand, three hundred eighty-eight".