2824321 has 4 divisors (see below), whose sum is σ = 2900692. Its totient is φ = 2747952.

The previous prime is 2824319. The next prime is 2824333. The reversal of 2824321 is 1234282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 1185921 = 1280^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2824321 - 2¹ = 2824319 is a prime.

It is a super-2 number, since 2×2824321² = 15953578222082, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

2824321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2824292 and 2824301.

It is not an unprimeable number, because it can be changed into a prime (2824351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38130 + ... + 38203.

It is an arithmetic number, because the mean of its divisors is an integer number (725173).

2^2824321 is an apocalyptic number.

It is an amenable number.

2824321 is a deficient number, since it is larger than the sum of its proper divisors (76371).

2824321 is an equidigital number, since it uses as much as digits as its factorization.

2824321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76370.

The product of its digits is 768, while the sum is 22.

The square root of 2824321 is about 1680.5716289406. The cubic root of 2824321 is about 141.3528876815.

The spelling of 2824321 in words is "two million, eight hundred twenty-four thousand, three hundred twenty-one".