28645836278 has 8 divisors (see below), whose sum is σ = 43002093240. Its totient is φ = 14311805200.

The previous prime is 28645836181. The next prime is 28645836299. The reversal of 28645836278 is 87263854682.

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

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, 5553248 + ... + 5558403.

It is an arithmetic number, because the mean of its divisors is an integer number (5375261655).

Almost surely, 2^28645836278 is an apocalyptic number.

28645836278 is a deficient number, since it is larger than the sum of its proper divisors (14356256962).

28645836278 is a wasteful number, since it uses less digits than its factorization.

28645836278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112942.

The product of its digits is 30965760, while the sum is 59.

The spelling of 28645836278 in words is "twenty-eight billion, six hundred forty-five million, eight hundred thirty-six thousand, two hundred seventy-eight".