28082081678 has 8 divisors (see below), whose sum is σ = 48140711472. Its totient is φ = 12035177856.

The previous prime is 28082081609. The next prime is 28082081707. The reversal of 28082081678 is 87618028082.

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

It is a super-2 number, since 2×28082081678² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002931475 + ... + 1002931502.

It is an arithmetic number, because the mean of its divisors is an integer number (6017588934).

Almost surely, 2^28082081678 is an apocalyptic number.

28082081678 is a deficient number, since it is larger than the sum of its proper divisors (20058629794).

28082081678 is a wasteful number, since it uses less digits than its factorization.

28082081678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005862986.

The product of its (nonzero) digits is 688128, while the sum is 50.

The spelling of 28082081678 in words is "twenty-eight billion, eighty-two million, eighty-one thousand, six hundred seventy-eight".