434728 has 24 divisors (see below), whose sum is σ = 949050. Its totient is φ = 186144.

The previous prime is 434719. The next prime is 434743. The reversal of 434728 is 827434.

It can be written as a sum of positive squares in only one way, i.e., 432964 + 1764 = 658^2 + 42^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 434696 and 434705.

It is an unprimeable number.

434728 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 (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163 + ... + 946.

2⁴³⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

434728 is an abundant number, since it is smaller than the sum of its proper divisors (514322).

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

434728 is a wasteful number, since it uses less digits than its factorization.

434728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1118 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 434728 is about 659.3390630017. The cubic root of 434728 is about 75.7540525812.

The spelling of 434728 in words is "four hundred thirty-four thousand, seven hundred twenty-eight".