428078 has 8 divisors (see below), whose sum is σ = 733872. Its totient is φ = 183456.

The previous prime is 428047. The next prime is 428083. The reversal of 428078 is 870824.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 428078.

It is a congruent number.

It is an unprimeable number.

428078 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15275 + ... + 15302.

It is an arithmetic number, because the mean of its divisors is an integer number (91734).

2⁴²⁸⁰⁷⁸ is an apocalyptic number.

428078 is a deficient number, since it is larger than the sum of its proper divisors (305794).

428078 is a wasteful number, since it uses less digits than its factorization.

428078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30586.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 428078 is about 654.2766998755. The cubic root of 428078 is about 75.3657981739.

It can be divided in two parts, 4 and 28078, that added together give a palindrome (28082).

The spelling of 428078 in words is "four hundred twenty-eight thousand, seventy-eight".