22506243 has 8 divisors (see below), whose sum is σ = 30706368. Its totient is φ = 14655144.

The previous prime is 22506191. The next prime is 22506247. The reversal of 22506243 is 34260522.

22506243 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22506243 - 2⁶ = 22506179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22506247) 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 7 ways as a sum of consecutive naturals, for example, 87105 + ... + 87362.

It is an arithmetic number, because the mean of its divisors is an integer number (3838296).

Almost surely, 2^22506243 is an apocalyptic number.

22506243 is a deficient number, since it is larger than the sum of its proper divisors (8200125).

22506243 is a wasteful number, since it uses less digits than its factorization.

22506243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174513.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 22506243 is about 4744.0745145919. The cubic root of 22506243 is about 282.3369168628.

Adding to 22506243 its reverse (34260522), we get a palindrome (56766765).

The spelling of 22506243 in words is "twenty-two million, five hundred six thousand, two hundred forty-three".