20216104 has 8 divisors (see below), whose sum is σ = 37905210. Its totient is φ = 10108048.

The previous prime is 20216099. The next prime is 20216137. The reversal of 20216104 is 40161202.

It can be written as a sum of positive squares in only one way, i.e., 16793604 + 3422500 = 4098^2 + 1850^2 .

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

It is an unprimeable number.

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, 1263499 + ... + 1263514.

Almost surely, 2^20216104 is an apocalyptic number.

It is an amenable number.

20216104 is a deficient number, since it is larger than the sum of its proper divisors (17689106).

20216104 is a wasteful number, since it uses less digits than its factorization.

20216104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527019 (or 2527015 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20216104 is about 4496.2322004096. The cubic root of 20216104 is about 272.4159222136.

Adding to 20216104 its reverse (40161202), we get a palindrome (60377306).

The spelling of 20216104 in words is "twenty million, two hundred sixteen thousand, one hundred four".