23641021 has 8 divisors (see below), whose sum is σ = 24240384. Its totient is φ = 23047440.

The previous prime is 23641019. The next prime is 23641027. The reversal of 23641021 is 12014632.

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 23641021 - 2¹ = 23641019 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 23641021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641027) 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, 7516 + ... + 10186.

It is an arithmetic number, because the mean of its divisors is an integer number (3030048).

Almost surely, 2^23641021 is an apocalyptic number.

It is an amenable number.

23641021 is a deficient number, since it is larger than the sum of its proper divisors (599363).

23641021 is a wasteful number, since it uses less digits than its factorization.

23641021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 23641021 is about 4862.2033071438. The cubic root of 23641021 is about 287.0045242845.

Adding to 23641021 its reverse (12014632), we get a palindrome (35655653).

The spelling of 23641021 in words is "twenty-three million, six hundred forty-one thousand, twenty-one".