22444431 has 8 divisors (see below), whose sum is σ = 29953200. Its totient is φ = 14949312.

The previous prime is 22444423. The next prime is 22444439. The reversal of 22444431 is 13444422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22444423) and next prime (22444439).

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

It is not a de Polignac number, because 22444431 - 2³ = 22444423 is a prime.

It is a super-2 number, since 2×22444431² = 1007504965827522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444439) 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, 1395 + ... + 6843.

It is an arithmetic number, because the mean of its divisors is an integer number (3744150).

Almost surely, 2^22444431 is an apocalyptic number.

22444431 is a deficient number, since it is larger than the sum of its proper divisors (7508769).

22444431 is a wasteful number, since it uses less digits than its factorization.

22444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its digits is 3072, while the sum is 24.

The square root of 22444431 is about 4737.5553822620. Note that the first 3 decimals coincide. The cubic root of 22444431 is about 282.0782062656.

Adding to 22444431 its reverse (13444422), we get a palindrome (35888853).

Subtracting from 22444431 its reverse (13444422), we obtain a palindrome (9000009).

The spelling of 22444431 in words is "twenty-two million, four hundred forty-four thousand, four hundred thirty-one".