40036786 has 4 divisors (see below), whose sum is σ = 60055182. Its totient is φ = 20018392.

The previous prime is 40036729. The next prime is 40036811. The reversal of 40036786 is 68763004.

40036786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25452025 + 14584761 = 5045^2 + 3819^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10009195 + ... + 10009198.

Almost surely, 2^40036786 is an apocalyptic number.

40036786 is a deficient number, since it is larger than the sum of its proper divisors (20018396).

40036786 is a wasteful number, since it uses less digits than its factorization.

40036786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20018395.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 40036786 is about 6327.4628406653. The cubic root of 40036786 is about 342.0999958388.

The spelling of 40036786 in words is "forty million, thirty-six thousand, seven hundred eighty-six".