428718 has 8 divisors (see below), whose sum is σ = 857448. Its totient is φ = 142904.

The previous prime is 428693. The next prime is 428731. The reversal of 428718 is 817824.

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

428718 is an admirable number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

428718 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, 35721 + ... + 35732.

It is an arithmetic number, because the mean of its divisors is an integer number (107181).

2⁴²⁸⁷¹⁸ is an apocalyptic number.

428718 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.

428718 is a wasteful number, since it uses less digits than its factorization.

428718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71458.

The product of its digits is 3584, while the sum is 30.

The square root of 428718 is about 654.7656069159. The cubic root of 428718 is about 75.4033381341.

The spelling of 428718 in words is "four hundred twenty-eight thousand, seven hundred eighteen".