22324447 has 4 divisors (see below), whose sum is σ = 22379440. Its totient is φ = 22269456.

The previous prime is 22324409. The next prime is 22324481. The reversal of 22324447 is 74442322.

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

It is a cyclic number.

It is not a de Polignac number, because 22324447 - 2¹⁵ = 22291679 is a prime.

It is a super-3 number, since 3×22324447³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22328447) 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, 26883 + ... + 27700.

It is an arithmetic number, because the mean of its divisors is an integer number (5594860).

Almost surely, 2^22324447 is an apocalyptic number.

22324447 is a deficient number, since it is larger than the sum of its proper divisors (54993).

22324447 is an equidigital number, since it uses as much as digits as its factorization.

22324447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54992.

The product of its digits is 10752, while the sum is 28.

The square root of 22324447 is about 4724.8753422709. The cubic root of 22324447 is about 281.5746610010.

Adding to 22324447 its reverse (74442322), we get a palindrome (96766769).

The spelling of 22324447 in words is "twenty-two million, three hundred twenty-four thousand, four hundred forty-seven".