22406545 has 32 divisors (see below), whose sum is σ = 32099328. Its totient is φ = 14696448.

The previous prime is 22406543. The next prime is 22406627. The reversal of 22406545 is 54560422.

It is a cyclic number.

It is not a de Polignac number, because 22406545 - 2¹ = 22406543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22406543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87057 + ... + 87313.

It is an arithmetic number, because the mean of its divisors is an integer number (1003104).

Almost surely, 2^22406545 is an apocalyptic number.

It is an amenable number.

22406545 is a deficient number, since it is larger than the sum of its proper divisors (9692783).

22406545 is a wasteful number, since it uses less digits than its factorization.

22406545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 22406545 is about 4733.5552178041. Note that the first 3 decimals coincide. The cubic root of 22406545 is about 281.9194017103.

Adding to 22406545 its reverse (54560422), we get a palindrome (76966967).

The spelling of 22406545 in words is "twenty-two million, four hundred six thousand, five hundred forty-five".