40285040 has 20 divisors (see below), whose sum is σ = 93662904. Its totient is φ = 16113984.

The previous prime is 40285039. The next prime is 40285061. The reversal of 40285040 is 4058204.

40285040 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 (20).

It is a junction number, because it is equal to n+sod(n) for n = 40284997 and 40285015.

It is a congruent number.

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, 251702 + ... + 251861.

Almost surely, 2^40285040 is an apocalyptic number.

40285040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40285040 is an abundant number, since it is smaller than the sum of its proper divisors (53377864).

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

40285040 is a wasteful number, since it uses less digits than its factorization.

40285040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503576 (or 503570 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 40285040 is about 6347.0497083291. The cubic root of 40285040 is about 342.8056199033.

The spelling of 40285040 in words is "forty million, two hundred eighty-five thousand, forty".