128763271 has 16 divisors (see below), whose sum is σ = 158901568. Its totient is φ = 101606400.

The previous prime is 128763233. The next prime is 128763289. The reversal of 128763271 is 172367821.

It is not a de Polignac number, because 128763271 - 2¹¹ = 128761223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128763271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128760271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36631 + ... + 39991.

It is an arithmetic number, because the mean of its divisors is an integer number (9931348).

Almost surely, 2^128763271 is an apocalyptic number.

128763271 is a deficient number, since it is larger than the sum of its proper divisors (30138297).

128763271 is a wasteful number, since it uses less digits than its factorization.

128763271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802.

The product of its digits is 28224, while the sum is 37.

The square root of 128763271 is about 11347.3904929724. The cubic root of 128763271 is about 504.9681658200.

The spelling of 128763271 in words is "one hundred twenty-eight million, seven hundred sixty-three thousand, two hundred seventy-one".