138000048 has 20 divisors (see below), whose sum is σ = 356500248. Its totient is φ = 46000000.

The previous prime is 138000013. The next prime is 138000053. The reversal of 138000048 is 840000831.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 137999991 and 138000027.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437453 + ... + 1437548.

Almost surely, 2^138000048 is an apocalyptic number.

It is an amenable number.

138000048 is an abundant number, since it is smaller than the sum of its proper divisors (218500200).

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

138000048 is a wasteful number, since it uses less digits than its factorization.

138000048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875012 (or 2875006 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 138000048 is about 11747.3421674862. The cubic root of 138000048 is about 516.7649851511.

Adding to 138000048 its reverse (840000831), we get a palindrome (978000879).

The spelling of 138000048 in words is "one hundred thirty-eight million, forty-eight", and thus it is an aban number.