1828321 has 8 divisors (see below), whose sum is σ = 2023488. Its totient is φ = 1638000.

The previous prime is 1828319. The next prime is 1828331. The reversal of 1828321 is 1238281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1828321 - 2¹ = 1828319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1828301) 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 in 7 ways as a sum of consecutive naturals, for example, 390 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (252936).

2^1828321 is an apocalyptic number.

1828321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1828321 is the 781-st octagonal number.

It is an amenable number.

1828321 is a deficient number, since it is larger than the sum of its proper divisors (195167).

1828321 is a wasteful number, since it uses less digits than its factorization.

1828321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423.

The product of its digits is 768, while the sum is 25.

The square root of 1828321 is about 1352.1542071820. The cubic root of 1828321 is about 122.2787008334.

The spelling of 1828321 in words is "one million, eight hundred twenty-eight thousand, three hundred twenty-one".