21600014 has 4 divisors (see below), whose sum is σ = 32400024. Its totient is φ = 10800006.

The previous prime is 21600011. The next prime is 21600023. The reversal of 21600014 is 41000612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21600011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5400002 + ... + 5400005.

It is an arithmetic number, because the mean of its divisors is an integer number (8100006).

Almost surely, 2^21600014 is an apocalyptic number.

21600014 is a deficient number, since it is larger than the sum of its proper divisors (10800010).

21600014 is a wasteful number, since it uses less digits than its factorization.

21600014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800009.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21600014 is about 4647.5815216088. The cubic root of 21600014 is about 278.4953901855.

Adding to 21600014 its reverse (41000612), we get a palindrome (62600626).

The spelling of 21600014 in words is "twenty-one million, six hundred thousand, fourteen".