23540489 has 8 divisors (see below), whose sum is σ = 27831360. Its totient is φ = 19481616.

The previous prime is 23540483. The next prime is 23540509. The reversal of 23540489 is 98404532.

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

It is not a de Polignac number, because 23540489 - 2¹⁶ = 23474953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23540483) 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, 57779 + ... + 58184.

It is an arithmetic number, because the mean of its divisors is an integer number (3478920).

Almost surely, 2^23540489 is an apocalyptic number.

23540489 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23540489 is a deficient number, since it is larger than the sum of its proper divisors (4290871).

23540489 is a wasteful number, since it uses less digits than its factorization.

23540489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115999.

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

The square root of 23540489 is about 4851.8541816506. The cubic root of 23540489 is about 286.5971231762.

The spelling of 23540489 in words is "twenty-three million, five hundred forty thousand, four hundred eighty-nine".