20016224 has 12 divisors (see below), whose sum is σ = 39407004. Its totient is φ = 10008096.

The previous prime is 20016221. The next prime is 20016229. The reversal of 20016224 is 42261002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312722 + ... + 312785.

It is an arithmetic number, because the mean of its divisors is an integer number (3283917).

Almost surely, 2^20016224 is an apocalyptic number.

It is an amenable number.

20016224 is a deficient number, since it is larger than the sum of its proper divisors (19390780).

20016224 is an equidigital number, since it uses as much as digits as its factorization.

20016224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625517 (or 625509 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20016224 is about 4473.9494856335. The cubic root of 20016224 is about 271.5151396740.

Adding to 20016224 its reverse (42261002), we get a palindrome (62277226).

The spelling of 20016224 in words is "twenty million, sixteen thousand, two hundred twenty-four".