20050436 has 12 divisors (see below), whose sum is σ = 40100928. Its totient is φ = 8593032.

The previous prime is 20050403. The next prime is 20050439. The reversal of 20050436 is 63405002.

20050436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20050439) 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, 358016 + ... + 358071.

It is an arithmetic number, because the mean of its divisors is an integer number (3341744).

Almost surely, 2^20050436 is an apocalyptic number.

It is an amenable number.

20050436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20050436 is a wasteful number, since it uses less digits than its factorization.

20050436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716098 (or 716096 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20050436 is about 4477.7713206460. The cubic root of 20050436 is about 271.6697440696.

Adding to 20050436 its reverse (63405002), we get a palindrome (83455438).

The spelling of 20050436 in words is "twenty million, fifty thousand, four hundred thirty-six".