38668786 has 16 divisors (see below), whose sum is σ = 62869464. Its totient is φ = 17731584.

The previous prime is 38668783. The next prime is 38668793. The reversal of 38668786 is 68786683.

It can be written as a sum of positive squares in 4 ways, for example, as 33235225 + 5433561 = 5765^2 + 2331^2 .

It is not an unprimeable number, because it can be changed into a prime (38668783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655 + ... + 8818.

Almost surely, 2^38668786 is an apocalyptic number.

38668786 is a deficient number, since it is larger than the sum of its proper divisors (24200678).

38668786 is a wasteful number, since it uses less digits than its factorization.

38668786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9645.

The product of its digits is 2322432, while the sum is 52.

The square root of 38668786 is about 6218.4231120116. The cubic root of 38668786 is about 338.1583994327.

The spelling of 38668786 in words is "thirty-eight million, six hundred sixty-eight thousand, seven hundred eighty-six".