23971855 has 8 divisors (see below), whose sum is σ = 29435472. Its totient is φ = 18731328.

The previous prime is 23971817. The next prime is 23971861. The reversal of 23971855 is 55817932.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23971855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 55534 + ... + 55963.

It is an arithmetic number, because the mean of its divisors is an integer number (3679434).

Almost surely, 2^23971855 is an apocalyptic number.

23971855 is a deficient number, since it is larger than the sum of its proper divisors (5463617).

23971855 is a wasteful number, since it uses less digits than its factorization.

23971855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111545.

The product of its digits is 75600, while the sum is 40.

The square root of 23971855 is about 4896.1061058764. The cubic root of 23971855 is about 288.3371140835.

The spelling of 23971855 in words is "twenty-three million, nine hundred seventy-one thousand, eight hundred fifty-five".