20200812 has 24 divisors (see below), whose sum is σ = 47230512. Its totient is φ = 6720000.

The previous prime is 20200801. The next prime is 20200813. The reversal of 20200812 is 21800202.

It is a junction number, because it is equal to n+sod(n) for n = 20200791 and 20200800.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5812 + ... + 8612.

It is an arithmetic number, because the mean of its divisors is an integer number (1967938).

Almost surely, 2^20200812 is an apocalyptic number.

It is an amenable number.

20200812 is an abundant number, since it is smaller than the sum of its proper divisors (27029700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20200812 is a wasteful number, since it uses less digits than its factorization.

20200812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409 (or 3407 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20200812 is about 4494.5313437554. The cubic root of 20200812 is about 272.3472173320.

It can be divided in two parts, 20200 and 812, that added together give a palindrome (21012).

The spelling of 20200812 in words is "twenty million, two hundred thousand, eight hundred twelve".