21600160 has 48 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 8563968.

The previous prime is 21600133. The next prime is 21600167. The reversal of 21600160 is 6100612.

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

It is not an unprimeable number, because it can be changed into a prime (21600167) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19789 + ... + 20851.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^21600160 is an apocalyptic number.

21600160 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 21600160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25740288).

21600160 is an abundant number, since it is smaller than the sum of its proper divisors (29880416).

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

21600160 is a wasteful number, since it uses less digits than its factorization.

21600160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 21600160 is about 4647.5972286763. The cubic root of 21600160 is about 278.4960176579.

Adding to 21600160 its reverse (6100612), we get a palindrome (27700772).

The spelling of 21600160 in words is "twenty-one million, six hundred thousand, one hundred sixty".