20200500 has 108 divisors (see below), whose sum is σ = 64691172. Its totient is φ = 5306400.

The previous prime is 20200441. The next prime is 20200511. The reversal of 20200500 is 500202.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 646416 + 19554084 = 804^2 + 4422^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 301467 + ... + 301533.

Almost surely, 2^20200500 is an apocalyptic number.

20200500 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 20200500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32345586).

20200500 is an abundant number, since it is smaller than the sum of its proper divisors (44490672).

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

20200500 is a wasteful number, since it uses less digits than its factorization.

20200500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 20200500 is about 4494.4966347746. The cubic root of 20200500 is about 272.3458151975.

Multiplying 20200500 by its product of nonzero digits (20), we get a square (404010000 = 20100²).

20200500 divided by its product of nonzero digits (20) gives a square (1010025 = 1005²).

Adding to 20200500 its reverse (500202), we get a palindrome (20700702).

The spelling of 20200500 in words is "twenty million, two hundred thousand, five hundred".