843628 has 6 divisors (see below), whose sum is σ = 1476356. Its totient is φ = 421812.

The previous prime is 843613. The next prime is 843629. The reversal of 843628 is 826348.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 843628.

It is not an unprimeable number, because it can be changed into a prime (843629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105450 + ... + 105457.

2⁸⁴³⁶²⁸ is an apocalyptic number.

It is an amenable number.

843628 is a deficient number, since it is larger than the sum of its proper divisors (632728).

843628 is a wasteful number, since it uses less digits than its factorization.

843628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210911 (or 210909 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 843628 is about 918.4922427544. The cubic root of 843628 is about 94.4895241413.

It can be divided in two parts, 8436 and 28, that added together give a square (8464 = 92²).

The spelling of 843628 in words is "eight hundred forty-three thousand, six hundred twenty-eight".