21832307328 has 64 divisors (see below), whose sum is σ = 62453008800. Its totient is φ = 6717631488.

The previous prime is 21832307303. The next prime is 21832307339. The reversal of 21832307328 is 82370323812.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2181738 + ... + 2191721.

Almost surely, 2^21832307328 is an apocalyptic number.

It is an amenable number.

21832307328 is an abundant number, since it is smaller than the sum of its proper divisors (40620701472).

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

21832307328 is a wasteful number, since it uses less digits than its factorization.

21832307328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373489 (or 4373477 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 21832307328 in words is "twenty-one billion, eight hundred thirty-two million, three hundred seven thousand, three hundred twenty-eight".