20224152 has 192 divisors, whose sum is σ = 66044160. Its totient is φ = 5529600.

The previous prime is 20224133. The next prime is 20224157. The reversal of 20224152 is 25142202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20224157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493252 + ... + 493292.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^20224152 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 20224152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

20224152 is an abundant number, since it is smaller than the sum of its proper divisors (45820008).

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

20224152 is a wasteful number, since it uses less digits than its factorization.

20224152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20224152 is about 4497.1270829275. The cubic root of 20224152 is about 272.4520668713.

Adding to 20224152 its reverse (25142202), we get a palindrome (45366354).

The spelling of 20224152 in words is "twenty million, two hundred twenty-four thousand, one hundred fifty-two".