21468116 has 12 divisors (see below), whose sum is σ = 38022432. Its totient is φ = 10604568.

The previous prime is 21468101. The next prime is 21468121. The reversal of 21468116 is 61186412.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32000 + ... + 32663.

It is an arithmetic number, because the mean of its divisors is an integer number (3168536).

Almost surely, 2^21468116 is an apocalyptic number.

It is an amenable number.

21468116 is a deficient number, since it is larger than the sum of its proper divisors (16554316).

21468116 is a wasteful number, since it uses less digits than its factorization.

21468116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64750 (or 64748 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 21468116 is about 4633.3698319905. The cubic root of 21468116 is about 277.9273657351.

The spelling of 21468116 in words is "twenty-one million, four hundred sixty-eight thousand, one hundred sixteen".