132728 has 16 divisors (see below), whose sum is σ = 254880. Its totient is φ = 64768.

The previous prime is 132721. The next prime is 132739. The reversal of 132728 is 827231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 552.

It is an arithmetic number, because the mean of its divisors is an integer number (15930).

2¹³²⁷²⁸ is an apocalyptic number.

It is an amenable number.

132728 is a deficient number, since it is larger than the sum of its proper divisors (122152).

132728 is a wasteful number, since it uses less digits than its factorization.

132728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 402 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 132728 is about 364.3185419382. The cubic root of 132728 is about 51.0098660907.

Adding to 132728 its reverse (827231), we get a palindrome (959959).

The spelling of 132728 in words is "one hundred thirty-two thousand, seven hundred twenty-eight".