138303104 has 32 divisors (see below), whose sum is σ = 280058340. Its totient is φ = 68014080.

The previous prime is 138303091. The next prime is 138303133. The reversal of 138303104 is 401303831.

It is a happy number.

138303104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 138109504 + 193600 = 11752^2 + 440^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 138303104.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1049 + ... + 16664.

Almost surely, 2^138303104 is an apocalyptic number.

It is an amenable number.

138303104 is an abundant number, since it is smaller than the sum of its proper divisors (141755236).

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

138303104 is an equidigital number, since it uses as much as digits as its factorization.

138303104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17788 (or 17776 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 138303104 is about 11760.2340112772. The cubic root of 138303104 is about 517.1429904023.

Adding to 138303104 its reverse (401303831), we get a palindrome (539606935).

The spelling of 138303104 in words is "one hundred thirty-eight million, three hundred three thousand, one hundred four".