21600316 has 6 divisors (see below), whose sum is σ = 37800560. Its totient is φ = 10800156.

The previous prime is 21600311. The next prime is 21600323. The reversal of 21600316 is 61300612.

It is a junction number, because it is equal to n+sod(n) for n = 21600293 and 21600302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21600311) 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 as a sum of consecutive naturals, namely, 2700036 + ... + 2700043.

Almost surely, 2^21600316 is an apocalyptic number.

It is an amenable number.

21600316 is a deficient number, since it is larger than the sum of its proper divisors (16200244).

21600316 is a wasteful number, since it uses less digits than its factorization.

21600316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400083 (or 5400081 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 21600316 is about 4647.6140115117. The cubic root of 21600316 is about 278.4966881047.

Adding to 21600316 its reverse (61300612), we get a palindrome (82900928).

The spelling of 21600316 in words is "twenty-one million, six hundred thousand, three hundred sixteen".