23273509 has 8 divisors (see below), whose sum is σ = 26630208. Its totient is φ = 19924800.

The previous prime is 23273491. The next prime is 23273533. The reversal of 23273509 is 90537232.

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

It is not a de Polignac number, because 23273509 - 2⁷ = 23273381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23273599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6909 + ... + 9709.

It is an arithmetic number, because the mean of its divisors is an integer number (3328776).

Almost surely, 2^23273509 is an apocalyptic number.

It is an amenable number.

23273509 is a deficient number, since it is larger than the sum of its proper divisors (3356699).

23273509 is a wasteful number, since it uses less digits than its factorization.

23273509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 23273509 is about 4824.2625343155. The cubic root of 23273509 is about 285.5095388701.

The spelling of 23273509 in words is "twenty-three million, two hundred seventy-three thousand, five hundred nine".