38218646 has 8 divisors (see below), whose sum is σ = 57485280. Its totient is φ = 19056888.

The previous prime is 38218643. The next prime is 38218651. The reversal of 38218646 is 64681283.

It is a happy number.

38218646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38218643) 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, 25301 + ... + 26768.

It is an arithmetic number, because the mean of its divisors is an integer number (7185660).

Almost surely, 2^38218646 is an apocalyptic number.

38218646 is a deficient number, since it is larger than the sum of its proper divisors (19266634).

38218646 is a wasteful number, since it uses less digits than its factorization.

38218646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52438.

The product of its digits is 55296, while the sum is 38.

The square root of 38218646 is about 6182.1230980950. The cubic root of 38218646 is about 336.8411170964.

The spelling of 38218646 in words is "thirty-eight million, two hundred eighteen thousand, six hundred forty-six".