23718961 has 16 divisors (see below), whose sum is σ = 29483136. Its totient is φ = 18614016.

The previous prime is 23718917. The next prime is 23718971. The reversal of 23718961 is 16981732.

It is a cyclic number.

It is not a de Polignac number, because 23718961 - 2⁹ = 23718449 is a prime.

It is a super-2 number, since 2×23718961² = 1125178221839042, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23718961.

It is not an unprimeable number, because it can be changed into a prime (23718971) 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 15 ways as a sum of consecutive naturals, for example, 1710 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (1842696).

Almost surely, 2^23718961 is an apocalyptic number.

It is an amenable number.

23718961 is a deficient number, since it is larger than the sum of its proper divisors (5764175).

23718961 is a wasteful number, since it uses less digits than its factorization.

23718961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448.

The product of its digits is 18144, while the sum is 37.

The square root of 23718961 is about 4870.2115970459. The cubic root of 23718961 is about 287.3195782927.

The spelling of 23718961 in words is "twenty-three million, seven hundred eighteen thousand, nine hundred sixty-one".