138848136 has 32 divisors (see below), whose sum is σ = 396709440. Its totient is φ = 39670848.

The previous prime is 138848111. The next prime is 138848137. The reversal of 138848136 is 631848831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (138848137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 413071 + ... + 413406.

It is an arithmetic number, because the mean of its divisors is an integer number (12397170).

Almost surely, 2^138848136 is an apocalyptic number.

It is an amenable number.

138848136 is an abundant number, since it is smaller than the sum of its proper divisors (257861304).

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

138848136 is a wasteful number, since it uses less digits than its factorization.

138848136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826493 (or 826489 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 138848136 is about 11783.3838942810. The cubic root of 138848136 is about 517.8214278903.

The spelling of 138848136 in words is "one hundred thirty-eight million, eight hundred forty-eight thousand, one hundred thirty-six".