28076681427 has 8 divisors (see below), whose sum is σ = 37437531600. Its totient is φ = 18716809440.

The previous prime is 28076681401. The next prime is 28076681443. The reversal of 28076681427 is 72418667082.

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

It is a de Polignac number, because none of the positive numbers 2^k-28076681427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28076681427.

It is not an unprimeable number, because it can be changed into a prime (28076681027) by changing a digit.

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, 174724 + ... + 294417.

It is an arithmetic number, because the mean of its divisors is an integer number (4679691450).

Almost surely, 2^28076681427 is an apocalyptic number.

28076681427 is a deficient number, since it is larger than the sum of its proper divisors (9360850173).

28076681427 is a wasteful number, since it uses less digits than its factorization.

28076681427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489093.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 28076681427 in words is "twenty-eight billion, seventy-six million, six hundred eighty-one thousand, four hundred twenty-seven".