23855921 has 8 divisors (see below), whose sum is σ = 24115200. Its totient is φ = 23598432.

The previous prime is 23855911. The next prime is 23855959. The reversal of 23855921 is 12955832.

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

It is a cyclic number.

It is not a de Polignac number, because 23855921 - 2¹⁸ = 23593777 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (23855911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62096 + ... + 62478.

It is an arithmetic number, because the mean of its divisors is an integer number (3014400).

Almost surely, 2^23855921 is an apocalyptic number.

It is an amenable number.

23855921 is a deficient number, since it is larger than the sum of its proper divisors (259279).

23855921 is a wasteful number, since it uses less digits than its factorization.

23855921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895.

The product of its digits is 21600, while the sum is 35.

The square root of 23855921 is about 4884.2523481082. The cubic root of 23855921 is about 287.8715388059.

The spelling of 23855921 in words is "twenty-three million, eight hundred fifty-five thousand, nine hundred twenty-one".