20544200 has 48 divisors (see below), whose sum is σ = 48174000. Its totient is φ = 8147520.

The previous prime is 20544193. The next prime is 20544203. The reversal of 20544200 is 244502.

It is not an unprimeable number, because it can be changed into a prime (20544203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27431 + ... + 28169.

It is an arithmetic number, because the mean of its divisors is an integer number (1003625).

Almost surely, 2^20544200 is an apocalyptic number.

20544200 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 20544200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24087000).

20544200 is an abundant number, since it is smaller than the sum of its proper divisors (27629800).

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

20544200 is a wasteful number, since it uses less digits than its factorization.

20544200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20544200 is about 4532.5710143361. The cubic root of 20544200 is about 273.8817398619.

Adding to 20544200 its reverse (244502), we get a palindrome (20788702).

The spelling of 20544200 in words is "twenty million, five hundred forty-four thousand, two hundred".