23988649 has 16 divisors (see below), whose sum is σ = 26320896. Its totient is φ = 21772800.

The previous prime is 23988647. The next prime is 23988707. The reversal of 23988649 is 94688932.

It is a cyclic number.

It is not a de Polignac number, because 23988649 - 2¹ = 23988647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23988641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88384 + ... + 88654.

It is an arithmetic number, because the mean of its divisors is an integer number (1645056).

Almost surely, 2^23988649 is an apocalyptic number.

It is an amenable number.

23988649 is a deficient number, since it is larger than the sum of its proper divisors (2332247).

23988649 is a wasteful number, since it uses less digits than its factorization.

23988649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 746496, while the sum is 49.

The square root of 23988649 is about 4897.8208419664. The cubic root of 23988649 is about 288.4044319601.

It can be divided in two parts, 239 and 88649, that added together give a palindrome (88888).

The spelling of 23988649 in words is "twenty-three million, nine hundred eighty-eight thousand, six hundred forty-nine".