23409845 has 8 divisors (see below), whose sum is σ = 28745376. Its totient is φ = 18292176.

The previous prime is 23409803. The next prime is 23409847. The reversal of 23409845 is 54890432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23409845 - 2¹⁰ = 23408821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23409847) 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 7 ways as a sum of consecutive naturals, for example, 54227 + ... + 54656.

It is an arithmetic number, because the mean of its divisors is an integer number (3593172).

Almost surely, 2^23409845 is an apocalyptic number.

It is an amenable number.

23409845 is a deficient number, since it is larger than the sum of its proper divisors (5335531).

23409845 is a wasteful number, since it uses less digits than its factorization.

23409845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108931.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 23409845 is about 4838.3721436037. The cubic root of 23409845 is about 286.0659578587.

The spelling of 23409845 in words is "twenty-three million, four hundred nine thousand, eight hundred forty-five".