28678108327 has 8 divisors (see below), whose sum is σ = 31713774480. Its totient is φ = 25713869760.

The previous prime is 28678108321. The next prime is 28678108387. The reversal of 28678108327 is 72380187682.

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-28678108327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28678108321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17856052 + ... + 17857657.

It is an arithmetic number, because the mean of its divisors is an integer number (3964221810).

Almost surely, 2^28678108327 is an apocalyptic number.

28678108327 is a deficient number, since it is larger than the sum of its proper divisors (3035666153).

28678108327 is a wasteful number, since it uses less digits than its factorization.

28678108327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35713793.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 28678108327 in words is "twenty-eight billion, six hundred seventy-eight million, one hundred eight thousand, three hundred twenty-seven".