428266 has 4 divisors (see below), whose sum is σ = 642402. Its totient is φ = 214132.

The previous prime is 428251. The next prime is 428273. The reversal of 428266 is 662824.

428266 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 can be written as a sum of positive squares in only one way, i.e., 335241 + 93025 = 579^2 + 305^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107065 + ... + 107068.

2⁴²⁸²⁶⁶ is an apocalyptic number.

428266 is a deficient number, since it is larger than the sum of its proper divisors (214136).

428266 is a wasteful number, since it uses less digits than its factorization.

428266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214135.

The product of its digits is 4608, while the sum is 28.

The square root of 428266 is about 654.4203542067. The cubic root of 428266 is about 75.3768294162.

The spelling of 428266 in words is "four hundred twenty-eight thousand, two hundred sixty-six".