138043248 has 160 divisors (see below), whose sum is σ = 436162560. Its totient is φ = 36771840.

The previous prime is 138043229. The next prime is 138043267. The reversal of 138043248 is 842340831.

138043248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138043229) and next prime (138043267).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301836 + ... + 302292.

It is an arithmetic number, because the mean of its divisors is an integer number (2726016).

Almost surely, 2^138043248 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 138043248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218081280).

138043248 is an abundant number, since it is smaller than the sum of its proper divisors (298119312).

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

138043248 is a wasteful number, since it uses less digits than its factorization.

138043248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 138043248 is about 11749.1807373961. The cubic root of 138043248 is about 516.8189028094.

The spelling of 138043248 in words is "one hundred thirty-eight million, forty-three thousand, two hundred forty-eight".