23352809 has 4 divisors (see below), whose sum is σ = 23984004. Its totient is φ = 22721616.

The previous prime is 23352793. The next prime is 23352811. The reversal of 23352809 is 90825332.

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 21827584 + 1525225 = 4672^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 23352809 - 2⁴ = 23352793 is a prime.

It is a super-3 number, since 3×23352809³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23352829) 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 3 ways as a sum of consecutive naturals, for example, 315542 + ... + 315615.

It is an arithmetic number, because the mean of its divisors is an integer number (5996001).

Almost surely, 2^23352809 is an apocalyptic number.

It is an amenable number.

23352809 is a deficient number, since it is larger than the sum of its proper divisors (631195).

23352809 is an equidigital number, since it uses as much as digits as its factorization.

23352809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631194.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 23352809 is about 4832.4744179354. The cubic root of 23352809 is about 285.8334441904.

The spelling of 23352809 in words is "twenty-three million, three hundred fifty-two thousand, eight hundred nine".