23224040 has 144 divisors (see below), whose sum is σ = 66146220. Its totient is φ = 7311360.

The previous prime is 23224037. The next prime is 23224079. The reversal of 23224040 is 4042232.

It can be written as a sum of positive squares in 6 ways, for example, as 10278436 + 12945604 = 3206^2 + 3598^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 566420 + ... + 566460.

Almost surely, 2^23224040 is an apocalyptic number.

23224040 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 23224040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33073110).

23224040 is an abundant number, since it is smaller than the sum of its proper divisors (42922180).

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

23224040 is a wasteful number, since it uses less digits than its factorization.

23224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 23224040 is about 4819.1327020533. The cubic root of 23224040 is about 285.3071071381.

Adding to 23224040 its reverse (4042232), we get a palindrome (27266272).

The spelling of 23224040 in words is "twenty-three million, two hundred twenty-four thousand, forty".