38389988 has 24 divisors (see below), whose sum is σ = 82686912. Its totient is φ = 15187104.

The previous prime is 38389987. The next prime is 38389991. The reversal of 38389988 is 88998383.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (38389987) 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 7 ways as a sum of consecutive naturals, for example, 52370 + ... + 53097.

It is an arithmetic number, because the mean of its divisors is an integer number (3445288).

Almost surely, 2^38389988 is an apocalyptic number.

It is an amenable number.

38389988 is an abundant number, since it is smaller than the sum of its proper divisors (44296924).

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

38389988 is a wasteful number, since it uses less digits than its factorization.

38389988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105491 (or 105489 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 56.

The square root of 38389988 is about 6195.9654614919. The cubic root of 38389988 is about 337.3437425726.

The spelling of 38389988 in words is "thirty-eight million, three hundred eighty-nine thousand, nine hundred eighty-eight".