23989516 has 24 divisors (see below), whose sum is σ = 44600976. Its totient is φ = 11251200.

The previous prime is 23989513. The next prime is 23989517. The reversal of 23989516 is 61598932.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23989513) 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 in 7 ways as a sum of consecutive naturals, for example, 39616 + ... + 40216.

It is an arithmetic number, because the mean of its divisors is an integer number (1858374).

Almost surely, 2^23989516 is an apocalyptic number.

It is an amenable number.

23989516 is a deficient number, since it is larger than the sum of its proper divisors (20611460).

23989516 is a wasteful number, since it uses less digits than its factorization.

23989516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1207 counting only the distinct ones).

The product of its digits is 116640, while the sum is 43.

The square root of 23989516 is about 4897.9093499166. The cubic root of 23989516 is about 288.4079064316.

The spelling of 23989516 in words is "twenty-three million, nine hundred eighty-nine thousand, five hundred sixteen".