28321212382 has 4 divisors (see below), whose sum is σ = 42481818576. Its totient is φ = 14160606190.

The previous prime is 28321212329. The next prime is 28321212397.

28321212382 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28321212382² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 7080303094 + ... + 7080303097.

It is an arithmetic number, because the mean of its divisors is an integer number (10620454644).

Almost surely, 2^28321212382 is an apocalyptic number.

28321212382 is a deficient number, since it is larger than the sum of its proper divisors (14160606194).

28321212382 is a wasteful number, since it uses less digits than its factorization.

28321212382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14160606193.

The product of its digits is 18432, while the sum is 34.

The spelling of 28321212382 in words is "twenty-eight billion, three hundred twenty-one million, two hundred twelve thousand, three hundred eighty-two".