21114304 has 28 divisors (see below), whose sum is σ = 42162984. Its totient is φ = 10490624.

The previous prime is 21114293. The next prime is 21114307. The reversal of 21114304 is 40341112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10119 + ... + 12025.

Almost surely, 2^21114304 is an apocalyptic number.

It is an amenable number.

21114304 is a deficient number, since it is larger than the sum of its proper divisors (21048680).

21114304 is a wasteful number, since it uses less digits than its factorization.

21114304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2082 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21114304 is about 4595.0303589857. The cubic root of 21114304 is about 276.3920773634.

Adding to 21114304 its reverse (40341112), we get a palindrome (61455416).

The spelling of 21114304 in words is "twenty-one million, one hundred fourteen thousand, three hundred four".