432728 has 8 divisors (see below), whose sum is σ = 811380. Its totient is φ = 216360.

The previous prime is 432727. The next prime is 432737. The reversal of 432728 is 827234.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 432697 and 432706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27038 + ... + 27053.

2⁴³²⁷²⁸ is an apocalyptic number.

It is an amenable number.

432728 is a deficient number, since it is larger than the sum of its proper divisors (378652).

432728 is a wasteful number, since it uses less digits than its factorization.

432728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54097 (or 54093 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 432728 is about 657.8206442489. The cubic root of 432728 is about 75.6377031685.

The spelling of 432728 in words is "four hundred thirty-two thousand, seven hundred twenty-eight".