428074 has 8 divisors (see below), whose sum is σ = 646020. Its totient is φ = 212736.

The previous prime is 428047. The next prime is 428083. The reversal of 428074 is 470824.

It can be written as a sum of positive squares in 2 ways, for example, as 342225 + 85849 = 585^2 + 293^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169 + ... + 940.

2⁴²⁸⁰⁷⁴ is an apocalyptic number.

428074 is a deficient number, since it is larger than the sum of its proper divisors (217946).

428074 is a wasteful number, since it uses less digits than its factorization.

428074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 428074 is about 654.2736430577. The cubic root of 428074 is about 75.3655634315.

Adding to 428074 its reverse (470824), we get a palindrome (898898).

The spelling of 428074 in words is "four hundred twenty-eight thousand, seventy-four".