8324021 has 4 divisors (see below), whose sum is σ = 8481132. Its totient is φ = 8166912.

The previous prime is 8323981. The next prime is 8324023. The reversal of 8324021 is 1204238.

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 4363921 + 3960100 = 2089^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 8324021 - 2¹⁰ = 8322997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8323984 and 8324002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8324023) 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, 78476 + ... + 78581.

It is an arithmetic number, because the mean of its divisors is an integer number (2120283).

Almost surely, 2^8324021 is an apocalyptic number.

It is an amenable number.

8324021 is a deficient number, since it is larger than the sum of its proper divisors (157111).

8324021 is a wasteful number, since it uses less digits than its factorization.

8324021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157110.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8324021 is about 2885.1379516411. The cubic root of 8324021 is about 202.6645190480.

Adding to 8324021 its reverse (1204238), we get a palindrome (9528259).

The spelling of 8324021 in words is "eight million, three hundred twenty-four thousand, twenty-one".