28081833178 has 8 divisors (see below), whose sum is σ = 48140285472. Its totient is φ = 12035071356.

The previous prime is 28081833151. The next prime is 28081833179. The reversal of 28081833178 is 87133818082.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28081833179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002922600 + ... + 1002922627.

It is an arithmetic number, because the mean of its divisors is an integer number (6017535684).

Almost surely, 2^28081833178 is an apocalyptic number.

28081833178 is a deficient number, since it is larger than the sum of its proper divisors (20058452294).

28081833178 is a wasteful number, since it uses less digits than its factorization.

28081833178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005845236.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 28081833178 in words is "twenty-eight billion, eighty-one million, eight hundred thirty-three thousand, one hundred seventy-eight".