20000224 has 12 divisors (see below), whose sum is σ = 39375504. Its totient is φ = 10000096.

The previous prime is 20000221. The next prime is 20000243. The reversal of 20000224 is 42200002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20000224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312472 + ... + 312535.

It is an arithmetic number, because the mean of its divisors is an integer number (3281292).

Almost surely, 2^20000224 is an apocalyptic number.

It is an amenable number.

20000224 is a deficient number, since it is larger than the sum of its proper divisors (19375280).

20000224 is an equidigital number, since it uses as much as digits as its factorization.

20000224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625017 (or 625009 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 20000224 is about 4472.1609988908. The cubic root of 20000224 is about 271.4427750383.

Adding to 20000224 its reverse (42200002), we get a palindrome (62200226).

The spelling of 20000224 in words is "twenty million, two hundred twenty-four", and thus it is an aban number.