40564140 has 24 divisors (see below), whose sum is σ = 113579760. Its totient is φ = 10817088.

The previous prime is 40564103. The next prime is 40564163. The reversal of 40564140 is 4146504.

It is a self number, because there is not a number n which added to its sum of digits gives 40564140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337975 + ... + 338094.

It is an arithmetic number, because the mean of its divisors is an integer number (4732490).

Almost surely, 2^40564140 is an apocalyptic number.

It is an amenable number.

40564140 is an abundant number, since it is smaller than the sum of its proper divisors (73015620).

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

40564140 is a wasteful number, since it uses less digits than its factorization.

40564140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676081 (or 676079 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40564140 is about 6368.9983513893. The cubic root of 40564140 is about 343.5954659661.

It can be divided in two parts, 40564 and 140, that added together give a palindrome (40704).

The spelling of 40564140 in words is "forty million, five hundred sixty-four thousand, one hundred forty".