434128 has 20 divisors (see below), whose sum is σ = 862048. Its totient is φ = 211680.

The previous prime is 434117. The next prime is 434141. The reversal of 434128 is 821434.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 434099 and 434108.

It is a congruent number.

It is an unprimeable number.

434128 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373 + ... + 1003.

2⁴³⁴¹²⁸ is an apocalyptic number.

It is an amenable number.

434128 is a deficient number, since it is larger than the sum of its proper divisors (427920).

434128 is a wasteful number, since it uses less digits than its factorization.

434128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 676 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 434128 is about 658.8839047966. The cubic root of 434128 is about 75.7191852938.

The spelling of 434128 in words is "four hundred thirty-four thousand, one hundred twenty-eight".