40505338 has 8 divisors (see below), whose sum is σ = 60931188. Its totient is φ = 20194944.

The previous prime is 40505317. The next prime is 40505341. The reversal of 40505338 is 83350504.

It can be written as a sum of positive squares in 2 ways, for example, as 38353249 + 2152089 = 6193^2 + 1467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27981 + ... + 29392.

Almost surely, 2^40505338 is an apocalyptic number.

40505338 is a deficient number, since it is larger than the sum of its proper divisors (20425850).

40505338 is a wasteful number, since it uses less digits than its factorization.

40505338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57728.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 40505338 is about 6364.3804097492. The cubic root of 40505338 is about 343.4293597195.

The spelling of 40505338 in words is "forty million, five hundred five thousand, three hundred thirty-eight".