23299921 has 8 divisors (see below), whose sum is σ = 24125184. Its totient is φ = 22488480.

The previous prime is 23299919. The next prime is 23299951. The reversal of 23299921 is 12999232.

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 23299921 - 2¹ = 23299919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23299901) 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, 36 + ... + 6826.

It is an arithmetic number, because the mean of its divisors is an integer number (3015648).

Almost surely, 2^23299921 is an apocalyptic number.

It is an amenable number.

23299921 is a deficient number, since it is larger than the sum of its proper divisors (825263).

23299921 is an equidigital number, since it uses as much as digits as its factorization.

23299921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911.

The product of its digits is 17496, while the sum is 37.

The square root of 23299921 is about 4826.9991713279. Note that the first 3 decimals coincide. The cubic root of 23299921 is about 285.6175017783.

It can be divided in two parts, 2 and 3299921, that added together give a palindrome (3299923).

The spelling of 23299921 in words is "twenty-three million, two hundred ninety-nine thousand, nine hundred twenty-one".