22448321 has 8 divisors (see below), whose sum is σ = 26179200. Its totient is φ = 19241124.

The previous prime is 22448287. The next prime is 22448323. The reversal of 22448321 is 12384422.

It is a de Polignac number, because none of the positive numbers 2^k-22448321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22448323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32381 + ... + 33066.

It is an arithmetic number, because the mean of its divisors is an integer number (3272400).

Almost surely, 2^22448321 is an apocalyptic number.

It is an amenable number.

22448321 is a deficient number, since it is larger than the sum of its proper divisors (3730879).

22448321 is an frugal number, since it uses more digits than its factorization.

22448321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65468 (or 65454 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 22448321 is about 4737.9659137651. The cubic root of 22448321 is about 282.0945016343.

The spelling of 22448321 in words is "twenty-two million, four hundred forty-eight thousand, three hundred twenty-one".