428146 has 12 divisors (see below), whose sum is σ = 678942. Its totient is φ = 202464.

The previous prime is 428143. The next prime is 428147. The reversal of 428146 is 641824.

It can be written as a sum of positive squares in only one way, i.e., 346921 + 81225 = 589^2 + 285^2 .

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 428146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426 + ... + 1018.

2⁴²⁸¹⁴⁶ is an apocalyptic number.

428146 is a deficient number, since it is larger than the sum of its proper divisors (250796).

428146 is a wasteful number, since it uses less digits than its factorization.

428146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 614 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 428146 is about 654.3286635935. The cubic root of 428146 is about 75.3697885705.

The spelling of 428146 in words is "four hundred twenty-eight thousand, one hundred forty-six".