139536768 has 256 divisors, whose sum is σ = 461399040. Its totient is φ = 36495360.

The previous prime is 139536767. The next prime is 139536773. The reversal of 139536768 is 867635931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139536767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2287458 + ... + 2287518.

It is an arithmetic number, because the mean of its divisors is an integer number (1802340).

Almost surely, 2^139536768 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 139536768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230699520).

139536768 is an abundant number, since it is smaller than the sum of its proper divisors (321862272).

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

139536768 is a wasteful number, since it uses less digits than its factorization.

139536768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 133 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 139536768 is about 11812.5682220252. The cubic root of 139536768 is about 518.6760798915.

The spelling of 139536768 in words is "one hundred thirty-nine million, five hundred thirty-six thousand, seven hundred sixty-eight".