138602048 has 56 divisors (see below), whose sum is σ = 309115968. Its totient is φ = 61180416.

The previous prime is 138602047. The next prime is 138602069. The reversal of 138602048 is 840206831.

138602048 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (138602047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15515 + ... + 22757.

It is an arithmetic number, because the mean of its divisors is an integer number (5519928).

Almost surely, 2^138602048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138602048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154557984).

138602048 is an abundant number, since it is smaller than the sum of its proper divisors (170513920).

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

138602048 is a wasteful number, since it uses less digits than its factorization.

138602048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291 (or 7281 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 138602048 is about 11772.9371016752. The cubic root of 138602048 is about 517.5153260804.

Adding to 138602048 its reverse (840206831), we get a palindrome (978808879).

The spelling of 138602048 in words is "one hundred thirty-eight million, six hundred two thousand, forty-eight".