428474 has 4 divisors (see below), whose sum is σ = 642714. Its totient is φ = 214236.

The previous prime is 428473. The next prime is 428489. The reversal of 428474 is 474824.

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

It can be written as a sum of positive squares in only one way, i.e., 368449 + 60025 = 607^2 + 245^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428474.

It is not an unprimeable number, because it can be changed into a prime (428471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107117 + ... + 107120.

2⁴²⁸⁴⁷⁴ is an apocalyptic number.

428474 is a deficient number, since it is larger than the sum of its proper divisors (214240).

428474 is a wasteful number, since it uses less digits than its factorization.

428474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214239.

The product of its digits is 7168, while the sum is 29.

The square root of 428474 is about 654.5792541778. The cubic root of 428474 is about 75.3890304338.

The spelling of 428474 in words is "four hundred twenty-eight thousand, four hundred seventy-four".