428658 has 8 divisors (see below), whose sum is σ = 857328. Its totient is φ = 142884.

The previous prime is 428657. The next prime is 428663. The reversal of 428658 is 856824.

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

428658 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (428657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35716 + ... + 35727.

It is an arithmetic number, because the mean of its divisors is an integer number (107166).

2⁴²⁸⁶⁵⁸ is an apocalyptic number.

428658 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.

428658 is a wasteful number, since it uses less digits than its factorization.

428658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71448.

The product of its digits is 15360, while the sum is 33.

The square root of 428658 is about 654.7197873900. The cubic root of 428658 is about 75.3998203506.

The spelling of 428658 in words is "four hundred twenty-eight thousand, six hundred fifty-eight".