24244220 has 144 divisors (see below), whose sum is σ = 69981408. Its totient is φ = 6935040.

The previous prime is 24244219. The next prime is 24244273. The reversal of 24244220 is 2244242.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 24244192 and 24244201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140054 + ... + 140226.

It is an arithmetic number, because the mean of its divisors is an integer number (485982).

Almost surely, 2^24244220 is an apocalyptic number.

24244220 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 24244220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34990704).

24244220 is an abundant number, since it is smaller than the sum of its proper divisors (45737188).

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

24244220 is a wasteful number, since it uses less digits than its factorization.

24244220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 24244220 is about 4923.8419958402. The cubic root of 24244220 is about 289.4250200810.

Adding to 24244220 its reverse (2244242), we get a palindrome (26488462).

The spelling of 24244220 in words is "twenty-four million, two hundred forty-four thousand, two hundred twenty".