22444261 has 8 divisors (see below), whose sum is σ = 26276544. Its totient is φ = 18768480.

The previous prime is 22444259. The next prime is 22444271. The reversal of 22444261 is 16244422.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22444261 - 2¹ = 22444259 is a prime.

It is a super-2 number, since 2×22444261² = 1007489703672242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444211) 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, 38815 + ... + 39388.

It is an arithmetic number, because the mean of its divisors is an integer number (3284568).

Almost surely, 2^22444261 is an apocalyptic number.

It is an amenable number.

22444261 is a deficient number, since it is larger than the sum of its proper divisors (3832283).

22444261 is an equidigital number, since it uses as much as digits as its factorization.

22444261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78251.

The product of its digits is 3072, while the sum is 25.

The square root of 22444261 is about 4737.5374404853. The cubic root of 22444261 is about 282.0774940857.

Adding to 22444261 its reverse (16244422), we get a palindrome (38688683).

The spelling of 22444261 in words is "twenty-two million, four hundred forty-four thousand, two hundred sixty-one".