20050650 has 72 divisors (see below), whose sum is σ = 57059964. Its totient is φ = 5030400.

The previous prime is 20050631. The next prime is 20050651. The reversal of 20050650 is 5605002.

It can be written as a sum of positive squares in 6 ways, for example, as 13593969 + 6456681 = 3687^2 + 2541^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20050651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6340 + ... + 8960.

Almost surely, 2^20050650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20050650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28529982).

20050650 is an abundant number, since it is smaller than the sum of its proper divisors (37009314).

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

20050650 is a wasteful number, since it uses less digits than its factorization.

20050650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656 (or 2648 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20050650 is about 4477.7952163984. The cubic root of 20050650 is about 271.6707105842.

Adding to 20050650 its reverse (5605002), we get a palindrome (25655652).

The spelling of 20050650 in words is "twenty million, fifty thousand, six hundred fifty".