22405227 has 8 divisors (see below), whose sum is σ = 32171664. Its totient is φ = 13787808.

The previous prime is 22405223. The next prime is 22405231. The reversal of 22405227 is 72250422.

It is an interprime number because it is at equal distance from previous prime (22405223) and next prime (22405231).

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

It is not a de Polignac number, because 22405227 - 2² = 22405223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22405197 and 22405206.

It is not an unprimeable number, because it can be changed into a prime (22405223) 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, 287208 + ... + 287285.

It is an arithmetic number, because the mean of its divisors is an integer number (4021458).

Almost surely, 2^22405227 is an apocalyptic number.

22405227 is a deficient number, since it is larger than the sum of its proper divisors (9766437).

22405227 is a wasteful number, since it uses less digits than its factorization.

22405227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574509.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22405227 is about 4733.4159969308. The cubic root of 22405227 is about 281.9138739050.

Adding to 22405227 its reverse (72250422), we get a palindrome (94655649).

The spelling of 22405227 in words is "twenty-two million, four hundred five thousand, two hundred twenty-seven".