22644064 has 12 divisors (see below), whose sum is σ = 44580564. Its totient is φ = 11322016.

The previous prime is 22644053. The next prime is 22644071. The reversal of 22644064 is 46044622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353782 + ... + 353845.

It is an arithmetic number, because the mean of its divisors is an integer number (3715047).

Almost surely, 2^22644064 is an apocalyptic number.

It is an amenable number.

22644064 is a deficient number, since it is larger than the sum of its proper divisors (21936500).

22644064 is an equidigital number, since it uses as much as digits as its factorization.

22644064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707637 (or 707629 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 22644064 is about 4758.5779388385. The cubic root of 22644064 is about 282.9120579800.

Adding to 22644064 its reverse (46044622), we get a palindrome (68688686).

It can be divided in two parts, 2264 and 4064, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 22644064 in words is "twenty-two million, six hundred forty-four thousand, sixty-four".