23528866 has 4 divisors (see below), whose sum is σ = 35293302. Its totient is φ = 11764432.

The previous prime is 23528863. The next prime is 23528893. The reversal of 23528866 is 66882532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16638241 + 6890625 = 4079^2 + 2625^2 .

It is not an unprimeable number, because it can be changed into a prime (23528863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5882215 + ... + 5882218.

Almost surely, 2^23528866 is an apocalyptic number.

23528866 is a deficient number, since it is larger than the sum of its proper divisors (11764436).

23528866 is a wasteful number, since it uses less digits than its factorization.

23528866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11764435.

The product of its digits is 138240, while the sum is 40.

The square root of 23528866 is about 4850.6562442622. The cubic root of 23528866 is about 286.5499467737.

The spelling of 23528866 in words is "twenty-three million, five hundred twenty-eight thousand, eight hundred sixty-six".