138000860 has 24 divisors (see below), whose sum is σ = 290225040. Its totient is φ = 55119744.

The previous prime is 138000847. The next prime is 138000887. The reversal of 138000860 is 68000831.

138000860 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

138000860 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10112 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (12092710).

Almost surely, 2^138000860 is an apocalyptic number.

138000860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138000860 is an abundant number, since it is smaller than the sum of its proper divisors (152224180).

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

138000860 is a wasteful number, since it uses less digits than its factorization.

138000860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10085 (or 10083 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 138000860 is about 11747.3767284445. The cubic root of 138000860 is about 516.7659987072.

The spelling of 138000860 in words is "one hundred thirty-eight million, eight hundred sixty", and thus it is an aban number.