38138508 has 36 divisors (see below), whose sum is σ = 100599408. Its totient is φ = 12159840.

The previous prime is 38138467. The next prime is 38138519. The reversal of 38138508 is 80583183.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22203 + ... + 23858.

It is an arithmetic number, because the mean of its divisors is an integer number (2794428).

Almost surely, 2^38138508 is an apocalyptic number.

It is an amenable number.

38138508 is an abundant number, since it is smaller than the sum of its proper divisors (62460900).

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

38138508 is a wasteful number, since it uses less digits than its factorization.

38138508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46094 (or 46089 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 38138508 is about 6175.6382666086. The cubic root of 38138508 is about 336.6055195073.

It can be divided in two parts, 3813 and 8508, that added together give a palindrome (12321).

The spelling of 38138508 in words is "thirty-eight million, one hundred thirty-eight thousand, five hundred eight".