21432230304 has 24 divisors (see below), whose sum is σ = 56259604800. Its totient is φ = 7144076736.

The previous prime is 21432230249. The next prime is 21432230311. The reversal of 21432230304 is 40303223412.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111626104 + ... + 111626295.

It is an arithmetic number, because the mean of its divisors is an integer number (2344150200).

Almost surely, 2^21432230304 is an apocalyptic number.

21432230304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21432230304 is an abundant number, since it is smaller than the sum of its proper divisors (34827374496).

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

21432230304 is a wasteful number, since it uses less digits than its factorization.

21432230304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223252412 (or 223252404 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21432230304 its reverse (40303223412), we get a palindrome (61735453716).

The spelling of 21432230304 in words is "twenty-one billion, four hundred thirty-two million, two hundred thirty thousand, three hundred four".