20050000 has 60 divisors (see below), whose sum is σ = 48676572. Its totient is φ = 8000000.

The previous prime is 20049989. The next prime is 20050003. The reversal of 20050000 is 5002.

It can be written as a sum of positive squares in 6 ways, for example, as 10265616 + 9784384 = 3204^2 + 3128^2 .

It is a sliding number, since 20050000 = 50000 + 20000000 and 1/50000 + 1/20000000 = 0.000020050000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050003) 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, 49800 + ... + 50200.

Almost surely, 2^20050000 is an apocalyptic number.

20050000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24338286).

20050000 is an abundant number, since it is smaller than the sum of its proper divisors (28626572).

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

20050000 is an frugal number, since it uses more digits than its factorization.

20050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 7.

The square root of 20050000 is about 4477.7226354476. The cubic root of 20050000 is about 271.6677748877.

Adding to 20050000 its reverse (5002), we get a palindrome (20055002).

It can be divided in two parts, 200 and 50000, that multiplied together give a 7-th power (10000000 = 10⁷).

The spelling of 20050000 in words is "twenty million, fifty thousand".