22231773 has 8 divisors (see below), whose sum is σ = 32936000. Its totient is φ = 14821164.

The previous prime is 22231771. The next prime is 22231787. The reversal of 22231773 is 37713222.

It is a happy number.

It is not a de Polignac number, because 22231773 - 2¹ = 22231771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 823399 = 22231773 / (2 + 2 + 2 + 3 + 1 + 7 + 7 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231771) 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, 411673 + ... + 411726.

It is an arithmetic number, because the mean of its divisors is an integer number (4117000).

Almost surely, 2^22231773 is an apocalyptic number.

It is an amenable number.

22231773 is a deficient number, since it is larger than the sum of its proper divisors (10704227).

22231773 is an equidigital number, since it uses as much as digits as its factorization.

22231773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823408 (or 823402 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 22231773 is about 4715.0581120491. The cubic root of 22231773 is about 281.1844931882.

Adding to 22231773 its reverse (37713222), we get a palindrome (59944995).

The spelling of 22231773 in words is "twenty-two million, two hundred thirty-one thousand, seven hundred seventy-three".