312028 has 6 divisors (see below), whose sum is σ = 546056. Its totient is φ = 156012.

The previous prime is 312023. The next prime is 312029. The reversal of 312028 is 820213.

It is a happy number.

312028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×312028² = 194722945568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312023) by changing a digit.

312028 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, 39000 + ... + 39007.

2³¹²⁰²⁸ is an apocalyptic number.

It is an amenable number.

312028 is a deficient number, since it is larger than the sum of its proper divisors (234028).

312028 is a wasteful number, since it uses less digits than its factorization.

312028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78011 (or 78009 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 312028 is about 558.5946652090. The cubic root of 312028 is about 67.8262577295.

The spelling of 312028 in words is "three hundred twelve thousand, twenty-eight".