23222247 has 4 divisors (see below), whose sum is σ = 30963000. Its totient is φ = 15481496.

The previous prime is 23222233. The next prime is 23222257. The reversal of 23222247 is 74222232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23222247 - 2⁴ = 23222231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23222257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870372 + ... + 3870377.

It is an arithmetic number, because the mean of its divisors is an integer number (7740750).

Almost surely, 2^23222247 is an apocalyptic number.

23222247 is a deficient number, since it is larger than the sum of its proper divisors (7740753).

23222247 is an equidigital number, since it uses as much as digits as its factorization.

23222247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740752.

The product of its digits is 2688, while the sum is 24.

The square root of 23222247 is about 4818.9466691384. The cubic root of 23222247 is about 285.2997646199.

Adding to 23222247 its reverse (74222232), we get a palindrome (97444479).

The spelling of 23222247 in words is "twenty-three million, two hundred twenty-two thousand, two hundred forty-seven".