40508564 has 6 divisors (see below), whose sum is σ = 70889994. Its totient is φ = 20254280.

The previous prime is 40508557. The next prime is 40508581. The reversal of 40508564 is 46580504.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 11971600 = 5342^2 + 3460^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40508564.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063567 + ... + 5063574.

It is an arithmetic number, because the mean of its divisors is an integer number (11814999).

Almost surely, 2^40508564 is an apocalyptic number.

It is an amenable number.

40508564 is a deficient number, since it is larger than the sum of its proper divisors (30381430).

40508564 is a wasteful number, since it uses less digits than its factorization.

40508564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10127145 (or 10127143 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 40508564 is about 6364.6338464989. The cubic root of 40508564 is about 343.4384768200.

The spelling of 40508564 in words is "forty million, five hundred eight thousand, five hundred sixty-four".