38409218 has 8 divisors (see below), whose sum is σ = 60118848. Its totient is φ = 18369604.

The previous prime is 38409211. The next prime is 38409221. The reversal of 38409218 is 81290483.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38409211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417446 + ... + 417537.

It is an arithmetic number, because the mean of its divisors is an integer number (7514856).

Almost surely, 2^38409218 is an apocalyptic number.

38409218 is a deficient number, since it is larger than the sum of its proper divisors (21709630).

38409218 is a wasteful number, since it uses less digits than its factorization.

38409218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835008.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 38409218 is about 6197.5170834779. The cubic root of 38409218 is about 337.4000596633.

The spelling of 38409218 in words is "thirty-eight million, four hundred nine thousand, two hundred eighteen".