23987965 has 8 divisors (see below), whose sum is σ = 30037248. Its totient is φ = 18355920.

The previous prime is 23987939. The next prime is 23987983. The reversal of 23987965 is 56978932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23987965 - 2⁵ = 23987933 is a prime.

It is a super-4 number, since 4×23987965⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104181 + ... + 104410.

It is an arithmetic number, because the mean of its divisors is an integer number (3754656).

Almost surely, 2^23987965 is an apocalyptic number.

It is an amenable number.

23987965 is a deficient number, since it is larger than the sum of its proper divisors (6049283).

23987965 is a wasteful number, since it uses less digits than its factorization.

23987965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208619.

The product of its digits is 816480, while the sum is 49.

The square root of 23987965 is about 4897.7510144963. The cubic root of 23987965 is about 288.4016907955.

The spelling of 23987965 in words is "twenty-three million, nine hundred eighty-seven thousand, nine hundred sixty-five".