22144635 has 12 divisors (see below), whose sum is σ = 38384112. Its totient is φ = 11810448.

The previous prime is 22144631. The next prime is 22144651. The reversal of 22144635 is 53644122.

22144635 is a `hidden beast` number, since 2 + 21 + 4 + 4 + 635 = 666.

It is not a de Polignac number, because 22144635 - 2² = 22144631 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22144599 and 22144608.

It is not an unprimeable number, because it can be changed into a prime (22144631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246007 + ... + 246096.

It is an arithmetic number, because the mean of its divisors is an integer number (3198676).

Almost surely, 2^22144635 is an apocalyptic number.

22144635 is a deficient number, since it is larger than the sum of its proper divisors (16239477).

22144635 is a wasteful number, since it uses less digits than its factorization.

22144635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492114 (or 492111 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 22144635 is about 4705.8086446433. The cubic root of 22144635 is about 280.8166422430.

Adding to 22144635 its reverse (53644122), we get a palindrome (75788757).

The spelling of 22144635 in words is "twenty-two million, one hundred forty-four thousand, six hundred thirty-five".