21334002304 has 32 divisors (see below), whose sum is σ = 45001415700. Its totient is φ = 10039529472.

The previous prime is 21334002259. The next prime is 21334002307. The reversal of 21334002304 is 40320043312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21304321600 + 29680704 = 145960^2 + 5448^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (21334002307) 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, 4899939 + ... + 4904290.

Almost surely, 2^21334002304 is an apocalyptic number.

It is an amenable number.

21334002304 is an abundant number, since it is smaller than the sum of its proper divisors (23667413396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21334002304 is an equidigital number, since it uses as much as digits as its factorization.

21334002304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9804260 (or 9804248 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21334002304 its reverse (40320043312), we get a palindrome (61654045616).

The spelling of 21334002304 in words is "twenty-one billion, three hundred thirty-four million, two thousand, three hundred four".