433684428 has 12 divisors (see below), whose sum is σ = 1011930360. Its totient is φ = 144561472.

The previous prime is 433684421. The next prime is 433684457. The reversal of 433684428 is 824486334.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 433684428.

It is not an unprimeable number, because it can be changed into a prime (433684421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18070173 + ... + 18070196.

It is an arithmetic number, because the mean of its divisors is an integer number (84327530).

Almost surely, 2^433684428 is an apocalyptic number.

It is an amenable number.

433684428 is an abundant number, since it is smaller than the sum of its proper divisors (578245932).

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

433684428 is a wasteful number, since it uses less digits than its factorization.

433684428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36140376 (or 36140374 counting only the distinct ones).

The product of its digits is 442368, while the sum is 42.

The square root of 433684428 is about 20825.0913083232. The cubic root of 433684428 is about 756.9338771326.

The spelling of 433684428 in words is "four hundred thirty-three million, six hundred eighty-four thousand, four hundred twenty-eight".