23158009 has 8 divisors (see below), whose sum is σ = 26829440. Its totient is φ = 19577376.

The previous prime is 23158007. The next prime is 23158019. The reversal of 23158009 is 90085132.

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

It is not a de Polignac number, because 23158009 - 2¹ = 23158007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23158001) 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, 22149 + ... + 23170.

It is an arithmetic number, because the mean of its divisors is an integer number (3353680).

Almost surely, 2^23158009 is an apocalyptic number.

It is an amenable number.

23158009 is a deficient number, since it is larger than the sum of its proper divisors (3671431).

23158009 is an equidigital number, since it uses as much as digits as its factorization.

23158009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45399.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 23158009 is about 4812.2769039198. The cubic root of 23158009 is about 285.0364537345.

The spelling of 23158009 in words is "twenty-three million, one hundred fifty-eight thousand, nine".