21096304 has 20 divisors (see below), whose sum is σ = 41872320. Its totient is φ = 10290560.

The previous prime is 21096281. The next prime is 21096329. The reversal of 21096304 is 40369012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15424 + ... + 16735.

It is an arithmetic number, because the mean of its divisors is an integer number (2093616).

Almost surely, 2^21096304 is an apocalyptic number.

It is an amenable number.

21096304 is a deficient number, since it is larger than the sum of its proper divisors (20776016).

21096304 is a wasteful number, since it uses less digits than its factorization.

21096304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32208 (or 32202 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 21096304 is about 4593.0713036050. The cubic root of 21096304 is about 276.3135133749.

The spelling of 21096304 in words is "twenty-one million, ninety-six thousand, three hundred four".