23380209 has 12 divisors (see below), whose sum is σ = 34595652. Its totient is φ = 15206400.

The previous prime is 23380193. The next prime is 23380237. The reversal of 23380209 is 90208332.

It can be written as a sum of positive squares in 2 ways, for example, as 5130225 + 18249984 = 2265^2 + 4272^2 .

It is not a de Polignac number, because 23380209 - 2⁴ = 23380193 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23380309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31312 + ... + 32049.

It is an arithmetic number, because the mean of its divisors is an integer number (2882971).

Almost surely, 2^23380209 is an apocalyptic number.

It is an amenable number.

23380209 is a deficient number, since it is larger than the sum of its proper divisors (11215443).

23380209 is a wasteful number, since it uses less digits than its factorization.

23380209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63408 (or 63405 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 23380209 is about 4835.3085734005. The cubic root of 23380209 is about 285.9451905662.

The spelling of 23380209 in words is "twenty-three million, three hundred eighty thousand, two hundred nine".