23728289 has 8 divisors (see below), whose sum is σ = 25862592. Its totient is φ = 21638160.

The previous prime is 23728267. The next prime is 23728297. The reversal of 23728289 is 98282732.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23728289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23728219) 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, 9917 + ... + 12074.

It is an arithmetic number, because the mean of its divisors is an integer number (3232824).

Almost surely, 2^23728289 is an apocalyptic number.

It is an amenable number.

23728289 is a deficient number, since it is larger than the sum of its proper divisors (2134303).

23728289 is a wasteful number, since it uses less digits than its factorization.

23728289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22087.

The product of its digits is 96768, while the sum is 41.

The square root of 23728289 is about 4871.1691615053. The cubic root of 23728289 is about 287.3572382583.

The spelling of 23728289 in words is "twenty-three million, seven hundred twenty-eight thousand, two hundred eighty-nine".