21204796 has 6 divisors (see below), whose sum is σ = 37108400. Its totient is φ = 10602396.

The previous prime is 21204793. The next prime is 21204803. The reversal of 21204796 is 69740212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21204791) by changing a digit.

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 as a sum of consecutive naturals, namely, 2650596 + ... + 2650603.

Almost surely, 2^21204796 is an apocalyptic number.

It is an amenable number.

21204796 is a deficient number, since it is larger than the sum of its proper divisors (15903604).

21204796 is a wasteful number, since it uses less digits than its factorization.

21204796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5301203 (or 5301201 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 21204796 is about 4604.8665561556. The cubic root of 21204796 is about 276.7863697109.

The spelling of 21204796 in words is "twenty-one million, two hundred four thousand, seven hundred ninety-six".