23985128 has 8 divisors (see below), whose sum is σ = 44972130. Its totient is φ = 11992560.

The previous prime is 23985127. The next prime is 23985133. The reversal of 23985128 is 82158932.

It can be written as a sum of positive squares in only one way, i.e., 23020804 + 964324 = 4798^2 + 982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 23985091 and 23985100.

It is not an unprimeable number, because it can be changed into a prime (23985127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1499063 + ... + 1499078.

Almost surely, 2^23985128 is an apocalyptic number.

It is an amenable number.

23985128 is a deficient number, since it is larger than the sum of its proper divisors (20987002).

23985128 is a wasteful number, since it uses less digits than its factorization.

23985128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998147 (or 2998143 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 23985128 is about 4897.4613832066. The cubic root of 23985128 is about 288.3903208182.

The spelling of 23985128 in words is "twenty-three million, nine hundred eighty-five thousand, one hundred twenty-eight".