20912050 has 36 divisors (see below), whose sum is σ = 40243518. Its totient is φ = 8080000.

The previous prime is 20912041. The next prime is 20912053. The reversal of 20912050 is 5021902.

It can be written as a sum of positive squares in 9 ways, for example, as 5803281 + 15108769 = 2409^2 + 3887^2 .

It is not an unprimeable number, because it can be changed into a prime (20912053) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 207000 + ... + 207100.

Almost surely, 2^20912050 is an apocalyptic number.

20912050 is a deficient number, since it is larger than the sum of its proper divisors (19331468).

20912050 is a wasteful number, since it uses less digits than its factorization.

20912050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 20912050 is about 4572.9694947594. The cubic root of 20912050 is about 275.5067241220.

Adding to 20912050 its reverse (5021902), we get a palindrome (25933952).

The spelling of 20912050 in words is "twenty million, nine hundred twelve thousand, fifty".