428478 has 8 divisors (see below), whose sum is σ = 856968. Its totient is φ = 142824.

The previous prime is 428473. The next prime is 428489. The reversal of 428478 is 874824.

It is a sphenic number, since it is the product of 3 distinct primes.

428478 is an admirable number.

It is a plaindrome in base 16.

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 428478.

It is not an unprimeable number, because it can be changed into a prime (428471) by changing a digit.

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, 35701 + ... + 35712.

It is an arithmetic number, because the mean of its divisors is an integer number (107121).

2⁴²⁸⁴⁷⁸ is an apocalyptic number.

428478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

428478 is a wasteful number, since it uses less digits than its factorization.

428478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71418.

The product of its digits is 14336, while the sum is 33.

The square root of 428478 is about 654.5823095685. The cubic root of 428478 is about 75.3892650300.

It can be divided in two parts, 4 and 28478, that added together give a palindrome (28482).

The spelling of 428478 in words is "four hundred twenty-eight thousand, four hundred seventy-eight".