22381233 has 8 divisors (see below), whose sum is σ = 34104768. Its totient is φ = 12789264.

The previous prime is 22381223. The next prime is 22381241. The reversal of 22381233 is 33218322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22381233 - 2⁴ = 22381217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22381213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532866 + ... + 532907.

It is an arithmetic number, because the mean of its divisors is an integer number (4263096).

Almost surely, 2^22381233 is an apocalyptic number.

It is an amenable number.

22381233 is a deficient number, since it is larger than the sum of its proper divisors (11723535).

22381233 is a wasteful number, since it uses less digits than its factorization.

22381233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065783.

The product of its digits is 1728, while the sum is 24.

The square root of 22381233 is about 4730.8807848011. The cubic root of 22381233 is about 281.8132030874.

Adding to 22381233 its reverse (33218322), we get a palindrome (55599555).

The spelling of 22381233 in words is "twenty-two million, three hundred eighty-one thousand, two hundred thirty-three".