20020216 has 8 divisors (see below), whose sum is σ = 37537920. Its totient is φ = 10010104.

The previous prime is 20020207. The next prime is 20020223. The reversal of 20020216 is 61202002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20020196 and 20020205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251256 + ... + 1251271.

It is an arithmetic number, because the mean of its divisors is an integer number (4692240).

Almost surely, 2^20020216 is an apocalyptic number.

It is an amenable number.

20020216 is a deficient number, since it is larger than the sum of its proper divisors (17517704).

20020216 is a wasteful number, since it uses less digits than its factorization.

20020216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502533 (or 2502529 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20020216 is about 4474.3956016428. The cubic root of 20020216 is about 271.5331886392.

Adding to 20020216 its reverse (61202002), we get a palindrome (81222218).

The spelling of 20020216 in words is "twenty million, twenty thousand, two hundred sixteen".