21304232706 has 32 divisors (see below), whose sum is σ = 44096659200. Its totient is φ = 6853589120.

The previous prime is 21304232603. The next prime is 21304232707. The reversal of 21304232706 is 60723240312.

It is not an unprimeable number, because it can be changed into a prime (21304232707) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 399655 + ... + 449813.

It is an arithmetic number, because the mean of its divisors is an integer number (1378020600).

Almost surely, 2^21304232706 is an apocalyptic number.

21304232706 is an abundant number, since it is smaller than the sum of its proper divisors (22792426494).

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

21304232706 is a wasteful number, since it uses less digits than its factorization.

21304232706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52634.

The product of its (nonzero) digits is 12096, while the sum is 30.

The spelling of 21304232706 in words is "twenty-one billion, three hundred four million, two hundred thirty-two thousand, seven hundred six".