139872768 has 80 divisors (see below), whose sum is σ = 425895360. Its totient is φ = 39960576.

The previous prime is 139872767. The next prime is 139872773. The reversal of 139872768 is 867278931.

It is a self number, because there is not a number n which added to its sum of digits gives 139872768.

It is not an unprimeable number, because it can be changed into a prime (139872767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4248 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (5323692).

Almost surely, 2^139872768 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 139872768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212947680).

139872768 is an abundant number, since it is smaller than the sum of its proper divisors (286022592).

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

139872768 is an equidigital number, since it uses as much as digits as its factorization.

139872768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037 (or 13021 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 139872768 is about 11826.7818107886. The cubic root of 139872768 is about 519.0920645556.

The spelling of 139872768 in words is "one hundred thirty-nine million, eight hundred seventy-two thousand, seven hundred sixty-eight".