22802321 has 4 divisors (see below), whose sum is σ = 24143652. Its totient is φ = 21460992.

The previous prime is 22802317. The next prime is 22802333. The reversal of 22802321 is 12320822.

22802321 is nontrivially palindromic in base 8.

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 19704721 + 3097600 = 4439^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 22802321 - 2² = 22802317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22802293 and 22802302.

It is not an unprimeable number, because it can be changed into a prime (22802621) 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, 670640 + ... + 670673.

It is an arithmetic number, because the mean of its divisors is an integer number (6035913).

Almost surely, 2^22802321 is an apocalyptic number.

It is an amenable number.

22802321 is a deficient number, since it is larger than the sum of its proper divisors (1341331).

22802321 is a wasteful number, since it uses less digits than its factorization.

22802321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341330.

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

The square root of 22802321 is about 4775.1775883207. The cubic root of 22802321 is about 283.5696094468.

The spelling of 22802321 in words is "twenty-two million, eight hundred two thousand, three hundred twenty-one".