272128 has 18 divisors (see below), whose sum is σ = 543704. Its totient is φ = 135936.

The previous prime is 272093. The next prime is 272131. The reversal of 272128 is 821272.

It is a junction number, because it is equal to n+sod(n) for n = 272099 and 272108.

It is a congruent number.

It is an unprimeable number.

272128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276 + ... + 787.

2²⁷²¹²⁸ is an apocalyptic number.

It is an amenable number.

272128 is a deficient number, since it is larger than the sum of its proper divisors (271576).

272128 is an equidigital number, since it uses as much as digits as its factorization.

272128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1065 counting only the distinct ones).

The product of its digits is 448, while the sum is 22.

The square root of 272128 is about 521.6588923808. The cubic root of 272128 is about 64.8023979197.

It can be divided in two parts, 272 and 128, that added together give a square (400 = 20²).

The spelling of 272128 in words is "two hundred seventy-two thousand, one hundred twenty-eight".