23024721 has 8 divisors (see below), whose sum is σ = 30731584. Its totient is φ = 15333840.

The previous prime is 23024717. The next prime is 23024731. The reversal of 23024721 is 12742032.

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

It is not a de Polignac number, because 23024721 - 2² = 23024717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23024731) 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 7 ways as a sum of consecutive naturals, for example, 85 + ... + 6786.

It is an arithmetic number, because the mean of its divisors is an integer number (3841448).

Almost surely, 2^23024721 is an apocalyptic number.

It is an amenable number.

23024721 is a deficient number, since it is larger than the sum of its proper divisors (7706863).

23024721 is a wasteful number, since it uses less digits than its factorization.

23024721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 23024721 is about 4798.4081735509. The cubic root of 23024721 is about 284.4885502500.

Adding to 23024721 its reverse (12742032), we get a palindrome (35766753).

The spelling of 23024721 in words is "twenty-three million, twenty-four thousand, seven hundred twenty-one".