428212 has 6 divisors (see below), whose sum is σ = 749378. Its totient is φ = 214104.

The previous prime is 428177. The next prime is 428221. The reversal of 428212 is 212824.

428212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 404496 + 23716 = 636^2 + 154^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 428212.

It is a congruent number.

It is an unprimeable number.

428212 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, 53523 + ... + 53530.

2⁴²⁸²¹² is an apocalyptic number.

It is an amenable number.

428212 is a deficient number, since it is larger than the sum of its proper divisors (321166).

428212 is a wasteful number, since it uses less digits than its factorization.

428212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107057 (or 107055 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 428212 is about 654.3790950206. The cubic root of 428212 is about 75.3736611984.

The spelling of 428212 in words is "four hundred twenty-eight thousand, two hundred twelve".