20900050 has 24 divisors (see below), whose sum is σ = 39122496. Its totient is φ = 8306640.

The previous prime is 20899993. The next prime is 20900051. The reversal of 20900050 is 5000902.

It is a junction number, because it is equal to n+sod(n) for n = 20899997 and 20900033.

It is not an unprimeable number, because it can be changed into a prime (20900051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7099 + ... + 9601.

It is an arithmetic number, because the mean of its divisors is an integer number (1630104).

Almost surely, 2^20900050 is an apocalyptic number.

20900050 is a deficient number, since it is larger than the sum of its proper divisors (18222446).

20900050 is a wasteful number, since it uses less digits than its factorization.

20900050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682 (or 2677 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 20900050 is about 4571.6572487447. The cubic root of 20900050 is about 275.4540158626.

Adding to 20900050 its reverse (5000902), we get a palindrome (25900952).

The spelling of 20900050 in words is "twenty million, nine hundred thousand, fifty".