138170760 has 128 divisors (see below), whose sum is σ = 510209280. Its totient is φ = 29150208.

The previous prime is 138170759. The next prime is 138170771. The reversal of 138170760 is 67071831.

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, 4594 + ... + 17246.

It is an arithmetic number, because the mean of its divisors is an integer number (3986010).

Almost surely, 2^138170760 is an apocalyptic number.

138170760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138170760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255104640).

138170760 is an abundant number, since it is smaller than the sum of its proper divisors (372038520).

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

138170760 is a wasteful number, since it uses less digits than its factorization.

138170760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12687 (or 12683 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 138170760 is about 11754.6059057716. The cubic root of 138170760 is about 516.9779841897.

The spelling of 138170760 in words is "one hundred thirty-eight million, one hundred seventy thousand, seven hundred sixty".