23816965 has 4 divisors (see below), whose sum is σ = 28580364. Its totient is φ = 19053568.

The previous prime is 23816963. The next prime is 23816971. The reversal of 23816965 is 56961832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3305124 + 20511841 = 1818^2 + 4529^2 .

It is a cyclic number.

It is not a de Polignac number, because 23816965 - 2¹ = 23816963 is a prime.

It is a super-2 number, since 2×23816965² = 1134495643622450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23816963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381692 + ... + 2381701.

It is an arithmetic number, because the mean of its divisors is an integer number (7145091).

Almost surely, 2^23816965 is an apocalyptic number.

It is an amenable number.

23816965 is a deficient number, since it is larger than the sum of its proper divisors (4763399).

23816965 is an equidigital number, since it uses as much as digits as its factorization.

23816965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763398.

The product of its digits is 77760, while the sum is 40.

The square root of 23816965 is about 4880.2628003008. The cubic root of 23816965 is about 287.7147582534.

The spelling of 23816965 in words is "twenty-three million, eight hundred sixteen thousand, nine hundred sixty-five".