40564238 has 16 divisors (see below), whose sum is σ = 71484336. Its totient is φ = 17019840.

The previous prime is 40564229. The next prime is 40564253. The reversal of 40564238 is 83246504.

It is a congruent number.

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, 70631 + ... + 71202.

It is an arithmetic number, because the mean of its divisors is an integer number (4467771).

Almost surely, 2^40564238 is an apocalyptic number.

40564238 is a deficient number, since it is larger than the sum of its proper divisors (30920098).

40564238 is a wasteful number, since it uses less digits than its factorization.

40564238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141859.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 40564238 is about 6369.0060449021. The cubic root of 40564238 is about 343.5957426664.

The spelling of 40564238 in words is "forty million, five hundred sixty-four thousand, two hundred thirty-eight".