227128 has 32 divisors (see below), whose sum is σ = 486000. Its totient is φ = 98560.

The previous prime is 227113. The next prime is 227131. The reversal of 227128 is 821722.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 227099 and 227108.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2508 + ... + 2596.

2²²⁷¹²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 227128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243000).

227128 is an abundant number, since it is smaller than the sum of its proper divisors (258872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227128 is a wasteful number, since it uses less digits than its factorization.

227128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 131 counting only the distinct ones).

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

The square root of 227128 is about 476.5794792057. The cubic root of 227128 is about 61.0131656613.

It can be divided in two parts, 22 and 7128, that multiplied together give a square (156816 = 396²).

The spelling of 227128 in words is "two hundred twenty-seven thousand, one hundred twenty-eight".