428984 has 8 divisors (see below), whose sum is σ = 804360. Its totient is φ = 214488.

The previous prime is 428977. The next prime is 429007. The reversal of 428984 is 489824.

428984 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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 428984.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26804 + ... + 26819.

It is an arithmetic number, because the mean of its divisors is an integer number (100545).

2⁴²⁸⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

428984 is a deficient number, since it is larger than the sum of its proper divisors (375376).

428984 is a wasteful number, since it uses less digits than its factorization.

428984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53629 (or 53625 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 428984 is about 654.9687015423. The cubic root of 428984 is about 75.4189296894.

The spelling of 428984 in words is "four hundred twenty-eight thousand, nine hundred eighty-four".