128277 has 8 divisors (see below), whose sum is σ = 190080. Its totient is φ = 85500.

The previous prime is 128273. The next prime is 128287. The reversal of 128277 is 772821.

It is not a de Polignac number, because 128277 - 2² = 128273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4751 = 128277 / (1 + 2 + 8 + 2 + 7 + 7).

128277 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 128277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2349 + ... + 2402.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2¹²⁸²⁷⁷ is an apocalyptic number.

It is an amenable number.

128277 is a deficient number, since it is larger than the sum of its proper divisors (61803).

128277 is an equidigital number, since it uses as much as digits as its factorization.

128277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760 (or 4754 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 128277 is about 358.1577864573. The cubic root of 128277 is about 50.4331697751.

The spelling of 128277 in words is "one hundred twenty-eight thousand, two hundred seventy-seven".