23205049 has 4 divisors (see below), whose sum is σ = 26520064. Its totient is φ = 19890036.

The previous prime is 23205011. The next prime is 23205067. The reversal of 23205049 is 94050232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23205049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23265049) 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 3 ways as a sum of consecutive naturals, for example, 1657497 + ... + 1657510.

It is an arithmetic number, because the mean of its divisors is an integer number (6630016).

Almost surely, 2^23205049 is an apocalyptic number.

It is an amenable number.

23205049 is a deficient number, since it is larger than the sum of its proper divisors (3315015).

23205049 is an equidigital number, since it uses as much as digits as its factorization.

23205049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315014.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 23205049 is about 4817.1619237887. The cubic root of 23205049 is about 285.2293178469.

The spelling of 23205049 in words is "twenty-three million, two hundred five thousand, forty-nine".