23643224 has 32 divisors (see below), whose sum is σ = 49548240. Its totient is φ = 10483200.

The previous prime is 23643203. The next prime is 23643227. The reversal of 23643224 is 42234632.

It is a super-2 number, since 2×23643224² = 1118004082228352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23643193 and 23643202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643227) 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, 332 + ... + 6884.

Almost surely, 2^23643224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23643224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24774120).

23643224 is an abundant number, since it is smaller than the sum of its proper divisors (25905016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23643224 is a wasteful number, since it uses less digits than its factorization.

23643224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611 (or 6607 counting only the distinct ones).

The product of its digits is 6912, while the sum is 26.

The square root of 23643224 is about 4862.4298452523. The cubic root of 23643224 is about 287.0134388929.

Adding to 23643224 its reverse (42234632), we get a palindrome (65877856).

The spelling of 23643224 in words is "twenty-three million, six hundred forty-three thousand, two hundred twenty-four".