38189388 has 24 divisors (see below), whose sum is σ = 89209008. Its totient is φ = 12715456.

The previous prime is 38189381. The next prime is 38189401. The reversal of 38189388 is 88398183.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38189381) 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, 18370 + ... + 20342.

It is an arithmetic number, because the mean of its divisors is an integer number (3717042).

Almost surely, 2^38189388 is an apocalyptic number.

It is an amenable number.

38189388 is an abundant number, since it is smaller than the sum of its proper divisors (51019620).

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

38189388 is a wasteful number, since it uses less digits than its factorization.

38189388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593 (or 3591 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 38189388 is about 6179.7563058749. The cubic root of 38189388 is about 336.7551397495.

The spelling of 38189388 in words is "thirty-eight million, one hundred eighty-nine thousand, three hundred eighty-eight".