28288627188278 has 8 divisors (see below), whose sum is σ = 42432990272640. Its totient is φ = 14144297097400.

The previous prime is 28288627188277. The next prime is 28288627188299. The reversal of 28288627188278 is 87288172688282.

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

It is a junction number, because it is equal to n+sod(n) for n = 28288627188199 and 28288627188208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28288627188271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5980118 + ... + 9609321.

It is an arithmetic number, because the mean of its divisors is an integer number (5304123784080).

Almost surely, 2^{28288627188278} is an apocalyptic number.

28288627188278 is a deficient number, since it is larger than the sum of its proper divisors (14144363084362).

28288627188278 is a wasteful number, since it uses less digits than its factorization.

28288627188278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16496742.

The product of its digits is 1233125376, while the sum is 77.

The spelling of 28288627188278 in words is "twenty-eight trillion, two hundred eighty-eight billion, six hundred twenty-seven million, one hundred eighty-eight thousand, two hundred seventy-eight".