23388621 has 4 divisors (see below), whose sum is σ = 31184832. Its totient is φ = 15592412.

The previous prime is 23388613. The next prime is 23388637. The reversal of 23388621 is 12688332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23388621 - 2³ = 23388613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23388641) 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, 3898101 + ... + 3898106.

It is an arithmetic number, because the mean of its divisors is an integer number (7796208).

Almost surely, 2^23388621 is an apocalyptic number.

It is an amenable number.

23388621 is a deficient number, since it is larger than the sum of its proper divisors (7796211).

23388621 is an equidigital number, since it uses as much as digits as its factorization.

23388621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796210.

The product of its digits is 13824, while the sum is 33.

The square root of 23388621 is about 4836.1783465873. The cubic root of 23388621 is about 285.9794800020.

The spelling of 23388621 in words is "twenty-three million, three hundred eighty-eight thousand, six hundred twenty-one".