428712 has 16 divisors (see below), whose sum is σ = 1071840. Its totient is φ = 142896.

The previous prime is 428693. The next prime is 428731. The reversal of 428712 is 217824.

It is an interprime number because it is at equal distance from previous prime (428693) and next prime (428731).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 17863 = 428712 / (4 + 2 + 8 + 7 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8908 + ... + 8955.

It is an arithmetic number, because the mean of its divisors is an integer number (66990).

2⁴²⁸⁷¹² is an apocalyptic number.

It is an amenable number.

428712 is an abundant number, since it is smaller than the sum of its proper divisors (643128).

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

428712 is a wasteful number, since it uses less digits than its factorization.

428712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17872 (or 17868 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 428712 is about 654.7610251076. The cubic root of 428712 is about 75.4029863705.

The spelling of 428712 in words is "four hundred twenty-eight thousand, seven hundred twelve".