428600 has 24 divisors (see below), whose sum is σ = 996960. Its totient is φ = 171360.

The previous prime is 428579. The next prime is 428629. The reversal of 428600 is 6824.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 428600.

It is an unprimeable number.

428600 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 5 ways as a sum of consecutive naturals, for example, 872 + ... + 1271.

It is an arithmetic number, because the mean of its divisors is an integer number (41540).

2⁴²⁸⁶⁰⁰ is an apocalyptic number.

428600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428600 is an abundant number, since it is smaller than the sum of its proper divisors (568360).

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

428600 is a wasteful number, since it uses less digits than its factorization.

428600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 428600 is about 654.6754921333. The cubic root of 428600 is about 75.3964195144.

The spelling of 428600 in words is "four hundred twenty-eight thousand, six hundred".