38644986 has 8 divisors (see below), whose sum is σ = 77289984. Its totient is φ = 12881660.

The previous prime is 38644939. The next prime is 38645011. The reversal of 38644986 is 68944683.

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

38644986 is an admirable number.

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, 3220410 + ... + 3220421.

It is an arithmetic number, because the mean of its divisors is an integer number (9661248).

Almost surely, 2^38644986 is an apocalyptic number.

38644986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38644986 is a wasteful number, since it uses less digits than its factorization.

38644986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440836.

The product of its digits is 995328, while the sum is 48.

The square root of 38644986 is about 6216.5091490321. The cubic root of 38644986 is about 338.0890082219.

The spelling of 38644986 in words is "thirty-eight million, six hundred forty-four thousand, nine hundred eighty-six".