28427126321 has 8 divisors (see below), whose sum is σ = 31140091488. Its totient is φ = 25735608000.

The previous prime is 28427126309. The next prime is 28427126327. The reversal of 28427126321 is 12362172482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28427126321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28427126327) 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 7 ways as a sum of consecutive naturals, for example, 5358935 + ... + 5364236.

It is an arithmetic number, because the mean of its divisors is an integer number (3892511436).

Almost surely, 2^28427126321 is an apocalyptic number.

It is an amenable number.

28427126321 is a deficient number, since it is larger than the sum of its proper divisors (2712965167).

28427126321 is a wasteful number, since it uses less digits than its factorization.

28427126321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10723423.

The product of its digits is 64512, while the sum is 38.

The spelling of 28427126321 in words is "twenty-eight billion, four hundred twenty-seven million, one hundred twenty-six thousand, three hundred twenty-one".