139328 has 28 divisors (see below), whose sum is σ = 316992. Its totient is φ = 59520.

The previous prime is 139313. The next prime is 139333. The reversal of 139328 is 823931.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 139297 and 139306.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139328.

It is an unprimeable number.

139328 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 603.

2¹³⁹³²⁸ 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 139328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158496).

139328 is an abundant number, since it is smaller than the sum of its proper divisors (177664).

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

139328 is an equidigital number, since it uses as much as digits as its factorization.

139328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 320 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 139328 is about 373.2666607132. The cubic root of 139328 is about 51.8417278294.

The spelling of 139328 in words is "one hundred thirty-nine thousand, three hundred twenty-eight".