22405243 has 16 divisors (see below), whose sum is σ = 26864640. Its totient is φ = 18269856.

The previous prime is 22405241. The next prime is 22405247. The reversal of 22405243 is 34250422.

It is a cyclic number.

It is not a de Polignac number, because 22405243 - 2¹ = 22405241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22405241) 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, 50818 + ... + 51256.

It is an arithmetic number, because the mean of its divisors is an integer number (1679040).

Almost surely, 2^22405243 is an apocalyptic number.

22405243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22405243 is a deficient number, since it is larger than the sum of its proper divisors (4459397).

22405243 is a wasteful number, since it uses less digits than its factorization.

22405243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22405243 is about 4733.4176870418. The cubic root of 22405243 is about 281.9139410117.

Adding to 22405243 its reverse (34250422), we get a palindrome (56655665).

The spelling of 22405243 in words is "twenty-two million, four hundred five thousand, two hundred forty-three".