71128 has 16 divisors (see below), whose sum is σ = 141480. Its totient is φ = 33408.

The previous prime is 71119. The next prime is 71129. The reversal of 71128 is 82117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126 + ... + 397.

2⁷¹¹²⁸ is an apocalyptic number.

It is an amenable number.

71128 is a deficient number, since it is larger than the sum of its proper divisors (70352).

71128 is a wasteful number, since it uses less digits than its factorization.

71128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 542 counting only the distinct ones).

The product of its digits is 112, while the sum is 19.

The square root of 71128 is about 266.6983314533. The cubic root of 71128 is about 41.4330463430.

The spelling of 71128 in words is "seventy-one thousand, one hundred twenty-eight".