22444645 has 8 divisors (see below), whose sum is σ = 27375480. Its totient is φ = 17661120.

The previous prime is 22444577. The next prime is 22444661. The reversal of 22444645 is 54644422.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 859329 + 21585316 = 927^2 + 4646^2 .

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

It is not a de Polignac number, because 22444645 - 2¹⁵ = 22411877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36490 + ... + 37099.

It is an arithmetic number, because the mean of its divisors is an integer number (3421935).

Almost surely, 2^22444645 is an apocalyptic number.

It is an amenable number.

22444645 is a deficient number, since it is larger than the sum of its proper divisors (4930835).

22444645 is an equidigital number, since it uses as much as digits as its factorization.

22444645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73655.

The product of its digits is 30720, while the sum is 31.

The square root of 22444645 is about 4737.5779676962. The cubic root of 22444645 is about 282.0791027693.

It can be divided in two parts, 2244 and 4645, that added together give a square (6889 = 83²).

The spelling of 22444645 in words is "twenty-two million, four hundred forty-four thousand, six hundred forty-five".