23018489 has 8 divisors (see below), whose sum is σ = 25644360. Its totient is φ = 20514816.

The previous prime is 23018449. The next prime is 23018491. The reversal of 23018489 is 98481032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4243600 + 18774889 = 2060^2 + 4333^2 .

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 23018489 - 2¹⁶ = 22952953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23018449) 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, 30152 + ... + 30905.

It is an arithmetic number, because the mean of its divisors is an integer number (3205545).

Almost surely, 2^23018489 is an apocalyptic number.

23018489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23018489 is a deficient number, since it is larger than the sum of its proper divisors (2625871).

23018489 is a wasteful number, since it uses less digits than its factorization.

23018489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61099.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 23018489 is about 4797.7587475820. The cubic root of 23018489 is about 284.4628808455.

The spelling of 23018489 in words is "twenty-three million, eighteen thousand, four hundred eighty-nine".