1171128 has 32 divisors (see below), whose sum is σ = 3346560. Its totient is φ = 334560.

The previous prime is 1171123. The next prime is 1171133. The reversal of 1171128 is 8211711.

It is an interprime number because it is at equal distance from previous prime (1171123) and next prime (1171133).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171123) 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, 3318 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (104580).

2^1171128 is an apocalyptic number.

It is an amenable number.

1171128 is an abundant number, since it is smaller than the sum of its proper divisors (2175432).

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

1171128 is a wasteful number, since it uses less digits than its factorization.

1171128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6987 (or 6983 counting only the distinct ones).

The product of its digits is 112, while the sum is 21.

The square root of 1171128 is about 1082.1866752090. The cubic root of 1171128 is about 105.4066768296.

Adding to 1171128 its reverse (8211711), we get a palindrome (9382839).

The spelling of 1171128 in words is "one million, one hundred seventy-one thousand, one hundred twenty-eight".