22352447 has 6 divisors (see below), whose sum is σ = 24204312. Its totient is φ = 20632872.

The previous prime is 22352443. The next prime is 22352453. The reversal of 22352447 is 74425322.

It is not a de Polignac number, because 22352447 - 2² = 22352443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22352441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65963 + ... + 66300.

It is an arithmetic number, because the mean of its divisors is an integer number (4034052).

Almost surely, 2^22352447 is an apocalyptic number.

22352447 is a deficient number, since it is larger than the sum of its proper divisors (1851865).

22352447 is a wasteful number, since it uses less digits than its factorization.

22352447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132289 (or 132276 counting only the distinct ones).

The product of its digits is 13440, while the sum is 29.

The square root of 22352447 is about 4727.8374549047. The cubic root of 22352447 is about 281.6923316522.

Adding to 22352447 its reverse (74425322), we get a palindrome (96777769).

The spelling of 22352447 in words is "twenty-two million, three hundred fifty-two thousand, four hundred forty-seven".