23224240 has 80 divisors (see below), whose sum is σ = 58933728. Its totient is φ = 8460288.

The previous prime is 23224231. The next prime is 23224241. The reversal of 23224240 is 4242232.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (23224241) 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 15 ways as a sum of consecutive naturals, for example, 142399 + ... + 142561.

Almost surely, 2^23224240 is an apocalyptic number.

23224240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23224240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29466864).

23224240 is an abundant number, since it is smaller than the sum of its proper divisors (35709488).

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

23224240 is a wasteful number, since it uses less digits than its factorization.

23224240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 23224240 is about 4819.1534526305. The cubic root of 23224240 is about 285.3079261351.

Adding to 23224240 its reverse (4242232), we get a palindrome (27466472).

The spelling of 23224240 in words is "twenty-three million, two hundred twenty-four thousand, two hundred forty".