230428 has 12 divisors (see below), whose sum is σ = 439992. Its totient is φ = 104720.

The previous prime is 230393. The next prime is 230431. The reversal of 230428 is 824032.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

230428 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 2575 + ... + 2662.

It is an arithmetic number, because the mean of its divisors is an integer number (36666).

2²³⁰⁴²⁸ is an apocalyptic number.

It is an amenable number.

230428 is a deficient number, since it is larger than the sum of its proper divisors (209564).

230428 is a wasteful number, since it uses less digits than its factorization.

230428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 230428 is about 480.0291657806. The cubic root of 230428 is about 61.3072379011.

It can be divided in two parts, 2304 and 28, that added together give a palindrome (2332).

The spelling of 230428 in words is "two hundred thirty thousand, four hundred twenty-eight".