321828 has 24 divisors (see below), whose sum is σ = 809088. Its totient is φ = 98976.

The previous prime is 321823. The next prime is 321829. The reversal of 321828 is 828123.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 321798 and 321807.

It is not an unprimeable number, because it can be changed into a prime (321821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (33712).

2³²¹⁸²⁸ is an apocalyptic number.

It is an amenable number.

321828 is an abundant number, since it is smaller than the sum of its proper divisors (487260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321828 is a wasteful number, since it uses less digits than its factorization.

321828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083 (or 2081 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 321828 is about 567.2988630343. The cubic root of 321828 is about 68.5290338144.

The spelling of 321828 in words is "three hundred twenty-one thousand, eight hundred twenty-eight".