40340836 has 12 divisors (see below), whose sum is σ = 71047228. Its totient is φ = 20041632.

The previous prime is 40340831. The next prime is 40340863. The reversal of 40340836 is 63804304.

40340836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21902400 + 18438436 = 4680^2 + 4294^2 .

It is not an unprimeable number, because it can be changed into a prime (40340831) by changing a digit.

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, 31491 + ... + 32746.

Almost surely, 2^40340836 is an apocalyptic number.

It is an amenable number.

40340836 is a deficient number, since it is larger than the sum of its proper divisors (30706392).

40340836 is a wasteful number, since it uses less digits than its factorization.

40340836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64398 (or 64396 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40340836 is about 6351.4436154311. The cubic root of 40340836 is about 342.9638122792.

The spelling of 40340836 in words is "forty million, three hundred forty thousand, eight hundred thirty-six".