21607200304 has 20 divisors (see below), whose sum is σ = 42074328400. Its totient is φ = 10749309120.

The previous prime is 21607200299. The next prime is 21607200313. The reversal of 21607200304 is 40300270612.

It is a super-3 number, since 3×21607200304³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389907 + ... + 3396274.

It is an arithmetic number, because the mean of its divisors is an integer number (2103716420).

Almost surely, 2^21607200304 is an apocalyptic number.

It is an amenable number.

21607200304 is a deficient number, since it is larger than the sum of its proper divisors (20467128096).

21607200304 is a wasteful number, since it uses less digits than its factorization.

21607200304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786388 (or 6786382 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 21607200304 its reverse (40300270612), we get a palindrome (61907470916).

The spelling of 21607200304 in words is "twenty-one billion, six hundred seven million, two hundred thousand, three hundred four".