428084 has 6 divisors (see below), whose sum is σ = 749154. Its totient is φ = 214040.

The previous prime is 428083. The next prime is 428093. The reversal of 428084 is 480824.

It can be written as a sum of positive squares in only one way, i.e., 250000 + 178084 = 500^2 + 422^2 .

It is a super-2 number, since 2×428084² = 366511822112, which contains 22 as substring.

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 428084.

It is not an unprimeable number, because it can be changed into a prime (428083) by changing a digit.

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 as a sum of consecutive naturals, namely, 53507 + ... + 53514.

It is an arithmetic number, because the mean of its divisors is an integer number (124859).

2⁴²⁸⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

428084 is a deficient number, since it is larger than the sum of its proper divisors (321070).

428084 is a wasteful number, since it uses less digits than its factorization.

428084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107025 (or 107023 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 428084 is about 654.2812850755. The cubic root of 428084 is about 75.3661502847.

The spelling of 428084 in words is "four hundred twenty-eight thousand, eighty-four".