20020224 has 176 divisors, whose sum is σ = 65504000. Its totient is φ = 5419008.

The previous prime is 20020223. The next prime is 20020267. The reversal of 20020224 is 42202002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053687 + ... + 1053705.

Almost surely, 2^20020224 is an apocalyptic number.

20020224 is a gapful number since it is divisible by the number (24) 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 20020224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32752000).

20020224 is an abundant number, since it is smaller than the sum of its proper divisors (45483776).

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

20020224 is an equidigital number, since it uses as much as digits as its factorization.

20020224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20020224 is about 4474.3964956182. The cubic root of 20020224 is about 271.5332248070.

Adding to 20020224 its reverse (42202002), we get a palindrome (62222226).

The spelling of 20020224 in words is "twenty million, twenty thousand, two hundred twenty-four".