128312794 has 8 divisors (see below), whose sum is σ = 192598560. Its totient is φ = 64113276.

The previous prime is 128312783. The next prime is 128312819. The reversal of 128312794 is 497213821.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17704 + ... + 23875.

It is an arithmetic number, because the mean of its divisors is an integer number (24074820).

Almost surely, 2^128312794 is an apocalyptic number.

128312794 is a deficient number, since it is larger than the sum of its proper divisors (64285766).

128312794 is a wasteful number, since it uses less digits than its factorization.

128312794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43124.

The product of its digits is 24192, while the sum is 37.

The square root of 128312794 is about 11327.5237364571. The cubic root of 128312794 is about 504.3786024187.

It can be divided in two parts, 12831 and 2794, that added together give a 6-th power (15625 = 5⁶).

The spelling of 128312794 in words is "one hundred twenty-eight million, three hundred twelve thousand, seven hundred ninety-four".