23220265 has 4 divisors (see below), whose sum is σ = 27864324. Its totient is φ = 18576208.

The previous prime is 23220259. The next prime is 23220277. The reversal of 23220265 is 56202232.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15968016 + 7252249 = 3996^2 + 2693^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220265 - 2¹³ = 23212073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322022 + ... + 2322031.

It is an arithmetic number, because the mean of its divisors is an integer number (6966081).

Almost surely, 2^23220265 is an apocalyptic number.

It is an amenable number.

23220265 is a deficient number, since it is larger than the sum of its proper divisors (4644059).

23220265 is an equidigital number, since it uses as much as digits as its factorization.

23220265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644058.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23220265 is about 4818.7410181499. The cubic root of 23220265 is about 285.2916476876.

Adding to 23220265 its reverse (56202232), we get a palindrome (79422497).

The spelling of 23220265 in words is "twenty-three million, two hundred twenty thousand, two hundred sixty-five".