38218404 has 72 divisors (see below), whose sum is σ = 105746368. Its totient is φ = 10523520.

The previous prime is 38218403. The next prime is 38218417. The reversal of 38218404 is 40481283.

It is not an unprimeable number, because it can be changed into a prime (38218403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70374 + ... + 70914.

Almost surely, 2^38218404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38218404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52873184).

38218404 is an abundant number, since it is smaller than the sum of its proper divisors (67527964).

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

38218404 is a wasteful number, since it uses less digits than its factorization.

38218404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 38218404 is about 6182.1035255000. The cubic root of 38218404 is about 336.8404061369.

Adding to 38218404 its reverse (40481283), we get a palindrome (78699687).

The spelling of 38218404 in words is "thirty-eight million, two hundred eighteen thousand, four hundred four".