428702 has 4 divisors (see below), whose sum is σ = 643056. Its totient is φ = 214350.

The previous prime is 428693. The next prime is 428731. The reversal of 428702 is 207824.

428702 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 428702.

It is an unprimeable number.

428702 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 as a sum of consecutive naturals, namely, 107174 + ... + 107177.

It is an arithmetic number, because the mean of its divisors is an integer number (160764).

2⁴²⁸⁷⁰² is an apocalyptic number.

428702 is a deficient number, since it is larger than the sum of its proper divisors (214354).

428702 is a wasteful number, since it uses less digits than its factorization.

428702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214353.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 428702 is about 654.7533886892. The cubic root of 428702 is about 75.4024000906.

The spelling of 428702 in words is "four hundred twenty-eight thousand, seven hundred two".