Search a number
-
+
871288 = 23119901
BaseRepresentation
bin11010100101101111000
31122021011221
43110231320
5210340123
630401424
710256125
oct3245570
91567157
10871288
11545680
12360274
13246772
1418974c
1512325d
hexd4b78

871288 has 16 divisors (see below), whose sum is σ = 1782360. Its totient is φ = 396000.

The previous prime is 871271. The next prime is 871289. The reversal of 871288 is 882178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871289) by changing a digit.

871288 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4863 + ... + 5038.

2871288 is an apocalyptic number.

871288 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

871288 is an abundant number, since it is smaller than the sum of its proper divisors (911072).

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

871288 is a wasteful number, since it uses less digits than its factorization.

871288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9918 (or 9914 counting only the distinct ones).

The product of its digits is 7168, while the sum is 34.

The square root of 871288 is about 933.4280904280. The cubic root of 871288 is about 95.5111140816.

The spelling of 871288 in words is "eight hundred seventy-one thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 11 22 44 88 9901 19802 39604 79208 108911 217822 435644 871288