21300160 has 112 divisors (see below), whose sum is σ = 59765184. Its totient is φ = 7077888.

The previous prime is 21300143. The next prime is 21300173. The reversal of 21300160 is 6100312.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 21300160.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82752 + ... + 83008.

Almost surely, 2^21300160 is an apocalyptic number.

21300160 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 21300160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29882592).

21300160 is an abundant number, since it is smaller than the sum of its proper divisors (38465024).

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

21300160 is a wasteful number, since it uses less digits than its factorization.

21300160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 21300160 is about 4615.2096377088. The cubic root of 21300160 is about 277.2006782576.

Adding to 21300160 its reverse (6100312), we get a palindrome (27400472).

The spelling of 21300160 in words is "twenty-one million, three hundred thousand, one hundred sixty".