128278063 has 8 divisors (see below), whose sum is σ = 135275120. Its totient is φ = 121305600.

The previous prime is 128278027. The next prime is 128278069. The reversal of 128278063 is 360872821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128278063 is a prime.

It is a super-2 number, since 2×128278063² = 32910522894063938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128278069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5113 + ... + 16813.

It is an arithmetic number, because the mean of its divisors is an integer number (16909390).

Almost surely, 2^128278063 is an apocalyptic number.

128278063 is a deficient number, since it is larger than the sum of its proper divisors (6997057).

128278063 is a wasteful number, since it uses less digits than its factorization.

128278063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12297.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 128278063 is about 11325.9905968529. The cubic root of 128278063 is about 504.3330908386. Note that the first 3 decimals are identical.

The spelling of 128278063 in words is "one hundred twenty-eight million, two hundred seventy-eight thousand, sixty-three".