728132 has 12 divisors (see below), whose sum is σ = 1318380. Its totient is φ = 351456.

The previous prime is 728131. The next prime is 728173. The reversal of 728132 is 231827.

It can be written as a sum of positive squares in 2 ways, for example, as 586756 + 141376 = 766^2 + 376^2 .

It is a junction number, because it is equal to n+sod(n) for n = 728098 and 728107.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728132.

It is not an unprimeable number, because it can be changed into a prime (728131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023 + ... + 3254.

It is an arithmetic number, because the mean of its divisors is an integer number (109865).

2⁷²⁸¹³² is an apocalyptic number.

It is an amenable number.

728132 is a deficient number, since it is larger than the sum of its proper divisors (590248).

728132 is a wasteful number, since it uses less digits than its factorization.

728132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6310 (or 6308 counting only the distinct ones).

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

The square root of 728132 is about 853.3065099951. The cubic root of 728132 is about 89.9642656490.

Adding to 728132 its reverse (231827), we get a palindrome (959959).

The spelling of 728132 in words is "seven hundred twenty-eight thousand, one hundred thirty-two".