127428866 has 8 divisors (see below), whose sum is σ = 195588624. Its totient is φ = 62232660.

The previous prime is 127428863. The next prime is 127428881. The reversal of 127428866 is 668824721.

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 (127428863) 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 in 3 ways as a sum of consecutive naturals, for example, 740780 + ... + 740951.

It is an arithmetic number, because the mean of its divisors is an integer number (24448578).

Almost surely, 2^127428866 is an apocalyptic number.

127428866 is a deficient number, since it is larger than the sum of its proper divisors (68159758).

127428866 is a wasteful number, since it uses less digits than its factorization.

127428866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481776.

The product of its digits is 258048, while the sum is 44.

The square root of 127428866 is about 11288.4394847118. The cubic root of 127428866 is about 503.2177359298.

The spelling of 127428866 in words is "one hundred twenty-seven million, four hundred twenty-eight thousand, eight hundred sixty-six".