428308 has 6 divisors (see below), whose sum is σ = 749546. Its totient is φ = 214152.

The previous prime is 428303. The next prime is 428339. The reversal of 428308 is 803824.

It can be written as a sum of positive squares in only one way, i.e., 327184 + 101124 = 572^2 + 318^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428303) by changing a digit.

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 as a sum of consecutive naturals, namely, 53535 + ... + 53542.

2⁴²⁸³⁰⁸ is an apocalyptic number.

It is an amenable number.

428308 is a deficient number, since it is larger than the sum of its proper divisors (321238).

428308 is a wasteful number, since it uses less digits than its factorization.

428308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107081 (or 107079 counting only the distinct ones).

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

The square root of 428308 is about 654.4524428864. The cubic root of 428308 is about 75.3792934015.

The spelling of 428308 in words is "four hundred twenty-eight thousand, three hundred eight".