138752368 has 60 divisors (see below), whose sum is σ = 293656552. Its totient is φ = 63452160.

The previous prime is 138752363. The next prime is 138752371. The reversal of 138752368 is 863257831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138752363) 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, 170683 + ... + 171493.

Almost surely, 2^138752368 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 138752368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146828276).

138752368 is an abundant number, since it is smaller than the sum of its proper divisors (154904184).

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

138752368 is a wasteful number, since it uses less digits than its factorization.

138752368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 867 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 138752368 is about 11779.3195049629. The cubic root of 138752368 is about 517.7023478418.

The spelling of 138752368 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, three hundred sixty-eight".