38138020 has 24 divisors (see below), whose sum is σ = 80224704. Its totient is φ = 15229536.

The previous prime is 38138017. The next prime is 38138027. The reversal of 38138020 is 2083183.

It is not an unprimeable number, because it can be changed into a prime (38138027) 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, 14529 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (3342696).

Almost surely, 2^38138020 is an apocalyptic number.

It is an amenable number.

38138020 is an abundant number, since it is smaller than the sum of its proper divisors (42086684).

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

38138020 is a wasteful number, since it uses less digits than its factorization.

38138020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219 (or 3217 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 38138020 is about 6175.5987563960. The cubic root of 38138020 is about 336.6040838263.

The spelling of 38138020 in words is "thirty-eight million, one hundred thirty-eight thousand, twenty".