428678 has 16 divisors (see below), whose sum is σ = 702000. Its totient is φ = 195552.

The previous prime is 428677. The next prime is 428683. The reversal of 428678 is 876824.

428678 is nontrivially palindromic in base 16.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (43875).

2⁴²⁸⁶⁷⁸ is an apocalyptic number.

428678 is a deficient number, since it is larger than the sum of its proper divisors (273322).

428678 is a wasteful number, since it uses less digits than its factorization.

428678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439.

The product of its digits is 21504, while the sum is 35.

The square root of 428678 is about 654.7350609216. The cubic root of 428678 is about 75.4009929815.

It can be divided in two parts, 42867 and 8, that added together give a cube (42875 = 35³).

The spelling of 428678 in words is "four hundred twenty-eight thousand, six hundred seventy-eight".