306028 has 6 divisors (see below), whose sum is σ = 535556. Its totient is φ = 153012.

The previous prime is 306023. The next prime is 306029. The reversal of 306028 is 820603.

It is a junction number, because it is equal to n+sod(n) for n = 305996 and 306014.

It is not an unprimeable number, because it can be changed into a prime (306023) by changing a digit.

306028 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, 38250 + ... + 38257.

2³⁰⁶⁰²⁸ is an apocalyptic number.

It is an amenable number.

306028 is a deficient number, since it is larger than the sum of its proper divisors (229528).

306028 is a wasteful number, since it uses less digits than its factorization.

306028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76511 (or 76509 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 306028 is about 553.1979754121. The cubic root of 306028 is about 67.3886963113.

The spelling of 306028 in words is "three hundred six thousand, twenty-eight".