28914045178 has 8 divisors (see below), whose sum is σ = 43754882868. Its totient is φ = 14329084224.

The previous prime is 28914045151. The next prime is 28914045187. The reversal of 28914045178 is 87154041982.

It can be written as a sum of positive squares in 2 ways, for example, as 16717714209 + 12196330969 = 129297^2 + 110437^2 .

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

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, 63968901 + ... + 63969352.

Almost surely, 2^28914045178 is an apocalyptic number.

28914045178 is a deficient number, since it is larger than the sum of its proper divisors (14840837690).

28914045178 is a wasteful number, since it uses less digits than its factorization.

28914045178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127938368.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 28914045178 in words is "twenty-eight billion, nine hundred fourteen million, forty-five thousand, one hundred seventy-eight".