23998645 has 16 divisors (see below), whose sum is σ = 33265728. Its totient is φ = 16426240.

The previous prime is 23998643. The next prime is 23998669. The reversal of 23998645 is 54689932.

It is not a de Polignac number, because 23998645 - 2¹ = 23998643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23998595 and 23998604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23998643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11899 + ... + 13768.

It is an arithmetic number, because the mean of its divisors is an integer number (2079108).

Almost surely, 2^23998645 is an apocalyptic number.

It is an amenable number.

23998645 is a deficient number, since it is larger than the sum of its proper divisors (9267083).

23998645 is a wasteful number, since it uses less digits than its factorization.

23998645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25700.

The product of its digits is 466560, while the sum is 46.

The square root of 23998645 is about 4898.8411895059. The cubic root of 23998645 is about 288.4444854922. Note that the first 4 decimals are identical.

The spelling of 23998645 in words is "twenty-three million, nine hundred ninety-eight thousand, six hundred forty-five".