20200816 has 20 divisors (see below), whose sum is σ = 40198072. Its totient is φ = 9827136.

The previous prime is 20200813. The next prime is 20200837. The reversal of 20200816 is 61800202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20200793 and 20200802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16470 + ... + 17653.

Almost surely, 2^20200816 is an apocalyptic number.

It is an amenable number.

20200816 is a deficient number, since it is larger than the sum of its proper divisors (19997256).

20200816 is a wasteful number, since it uses less digits than its factorization.

20200816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34168 (or 34162 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 20200816 is about 4494.5317887406. The cubic root of 20200816 is about 272.3472353080.

The spelling of 20200816 in words is "twenty million, two hundred thousand, eight hundred sixteen".