22643201 has 16 divisors (see below), whose sum is σ = 28594944. Its totient is φ = 17470464.

The previous prime is 22643189. The next prime is 22643209. The reversal of 22643201 is 10234622.

It is a cyclic number.

It is not a de Polignac number, because 22643201 - 2¹⁰ = 22642177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22643209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (1787184).

Almost surely, 2^22643201 is an apocalyptic number.

It is an amenable number.

22643201 is a deficient number, since it is larger than the sum of its proper divisors (5951743).

22643201 is a wasteful number, since it uses less digits than its factorization.

22643201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8320.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22643201 is about 4758.4872596236. The cubic root of 22643201 is about 282.9084638636.

Adding to 22643201 its reverse (10234622), we get a palindrome (32877823).

The spelling of 22643201 in words is "twenty-two million, six hundred forty-three thousand, two hundred one".