321876 has 18 divisors (see below), whose sum is σ = 813722. Its totient is φ = 107280.

The previous prime is 321851. The next prime is 321889. The reversal of 321876 is 678123.

It can be written as a sum of positive squares in only one way, i.e., 291600 + 30276 = 540^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

321876 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 in 5 ways as a sum of consecutive naturals, for example, 4435 + ... + 4506.

2³²¹⁸⁷⁶ is an apocalyptic number.

321876 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

321876 is an abundant number, since it is smaller than the sum of its proper divisors (491846).

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

321876 is a wasteful number, since it uses less digits than its factorization.

321876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8951 (or 8946 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 321876 is about 567.3411672001. The cubic root of 321876 is about 68.5324406343.

Adding to 321876 its reverse (678123), we get a palindrome (999999).

The spelling of 321876 in words is "three hundred twenty-one thousand, eight hundred seventy-six".