138710752 has 72 divisors (see below), whose sum is σ = 296613576. Its totient is φ = 63817728.

The previous prime is 138710729. The next prime is 138710753. The reversal of 138710752 is 257017831.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138710753) 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, 490003 + ... + 490285.

It is an arithmetic number, because the mean of its divisors is an integer number (4119633).

Almost surely, 2^138710752 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 138710752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148306788).

138710752 is an abundant number, since it is smaller than the sum of its proper divisors (157902824).

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

138710752 is a wasteful number, since it uses less digits than its factorization.

138710752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 138710752 is about 11777.5528867418. The cubic root of 138710752 is about 517.6505845085.

The spelling of 138710752 in words is "one hundred thirty-eight million, seven hundred ten thousand, seven hundred fifty-two".