20543200 has 36 divisors (see below), whose sum is σ = 50153040. Its totient is φ = 8216960.

The previous prime is 20543197. The next prime is 20543221. The reversal of 20543200 is 234502.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 12040 + ... + 13639.

It is an arithmetic number, because the mean of its divisors is an integer number (1393140).

Almost surely, 2^20543200 is an apocalyptic number.

20543200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20543200 is an abundant number, since it is smaller than the sum of its proper divisors (29609840).

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

20543200 is a wasteful number, since it uses less digits than its factorization.

20543200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25699 (or 25686 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20543200 is about 4532.4607003260. The cubic root of 20543200 is about 273.8772960094.

Adding to 20543200 its reverse (234502), we get a palindrome (20777702).

The spelling of 20543200 in words is "twenty million, five hundred forty-three thousand, two hundred".