138836016 has 60 divisors (see below), whose sum is σ = 423875400. Its totient is φ = 42071040.

The previous prime is 138835997. The next prime is 138836017. The reversal of 138836016 is 610638831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (138836017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42241 + ... + 45408.

It is an arithmetic number, because the mean of its divisors is an integer number (7064590).

Almost surely, 2^138836016 is an apocalyptic number.

138836016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138836016 is an abundant number, since it is smaller than the sum of its proper divisors (285039384).

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

138836016 is a wasteful number, since it uses less digits than its factorization.

138836016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87674 (or 87665 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 138836016 is about 11782.8695995500. The cubic root of 138836016 is about 517.8063606413.

The spelling of 138836016 in words is "one hundred thirty-eight million, eight hundred thirty-six thousand, sixteen".