20102224 has 10 divisors (see below), whose sum is σ = 38948090. Its totient is φ = 10051104.

The previous prime is 20102219. The next prime is 20102227. The reversal of 20102224 is 42220102.

It can be written as a sum of positive squares in only one way, i.e., 11102224 + 9000000 = 3332^2 + 3000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102227) 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, 628179 + ... + 628210.

It is an arithmetic number, because the mean of its divisors is an integer number (3894809).

Almost surely, 2^20102224 is an apocalyptic number.

It is an amenable number.

20102224 is a deficient number, since it is larger than the sum of its proper divisors (18845866).

20102224 is a wasteful number, since it uses less digits than its factorization.

20102224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256397 (or 1256391 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20102224 is about 4483.5503788850. The cubic root of 20102224 is about 271.9034403506.

Adding to 20102224 its reverse (42220102), we get a palindrome (62322326).

The spelling of 20102224 in words is "twenty million, one hundred two thousand, two hundred twenty-four".