20223600 has 120 divisors (see below), whose sum is σ = 68269440. Its totient is φ = 5103360.

The previous prime is 20223551. The next prime is 20223611. The reversal of 20223600 is 632202.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20223600.

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 23 ways as a sum of consecutive naturals, for example, 22357 + ... + 23243.

It is an arithmetic number, because the mean of its divisors is an integer number (568912).

Almost surely, 2^20223600 is an apocalyptic number.

20223600 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 20223600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34134720).

20223600 is an abundant number, since it is smaller than the sum of its proper divisors (48045840).

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

20223600 is a wasteful number, since it uses less digits than its factorization.

20223600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20223600 is about 4497.0657099936. The cubic root of 20223600 is about 272.4495880709.

Adding to 20223600 its reverse (632202), we get a palindrome (20855802).

The spelling of 20223600 in words is "twenty million, two hundred twenty-three thousand, six hundred".