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6881120 = 255291483
BaseRepresentation
bin11010001111111101100000
3110221121010022
4122033331200
53230143440
6403253012
7112326401
oct32177540
913847108
106881120
11397a984
12237a168
13156c08c
14cb19a8
1590dcb5
hex68ff60

6881120 has 48 divisors (see below), whose sum is σ = 16828560. Its totient is φ = 2655744.

The previous prime is 6881113. The next prime is 6881123. The reversal of 6881120 is 211886.

It is a self number, because there is not a number n which added to its sum of digits gives 6881120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3899 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (350595).

Almost surely, 26881120 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 6881120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8414280).

6881120 is an abundant number, since it is smaller than the sum of its proper divisors (9947440).

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

6881120 is a wasteful number, since it uses less digits than its factorization.

6881120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 6881120 is about 2623.1888990311. The cubic root of 6881120 is about 190.2040282900.

The spelling of 6881120 in words is "six million, eight hundred eighty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 29 32 40 58 80 116 145 160 232 290 464 580 928 1160 1483 2320 2966 4640 5932 7415 11864 14830 23728 29660 43007 47456 59320 86014 118640 172028 215035 237280 344056 430070 688112 860140 1376224 1720280 3440560 6881120