127928198 has 4 divisors (see below), whose sum is σ = 191892300. Its totient is φ = 63964098.

The previous prime is 127928191. The next prime is 127928201. The reversal of 127928198 is 891829721.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127928191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31982048 + ... + 31982051.

It is an arithmetic number, because the mean of its divisors is an integer number (47973075).

Almost surely, 2^127928198 is an apocalyptic number.

127928198 is a deficient number, since it is larger than the sum of its proper divisors (63964102).

127928198 is an equidigital number, since it uses as much as digits as its factorization.

127928198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63964101.

The product of its digits is 145152, while the sum is 47.

The square root of 127928198 is about 11310.5348237826. The cubic root of 127928198 is about 503.8741681121.

The spelling of 127928198 in words is "one hundred twenty-seven million, nine hundred twenty-eight thousand, one hundred ninety-eight".