Search a number
BaseRepresentation
bin11010111000111101000
31122202200101
43113013220
5211144003
630515144
710326613
oct3270750
91582611
10881128
11552006
12365ab4
1324b0a1
1418d17a
1512611d
hexd71e8

881128 has 16 divisors (see below), whose sum is σ = 1673280. Its totient is φ = 434928.

The previous prime is 881119. The next prime is 881141. The reversal of 881128 is 821188.

881128 is a nontrivial binomial coefficient, being equal to C(1328, 2).

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

It is a junction number, because it is equal to n+sod(n) for n = 881096 and 881105.

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 3 ways as a sum of consecutive naturals, for example, 1 + ... + 1327.

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

2881128 is an apocalyptic number.

881128 is the 1327-th triangular number and also the 664-th hexagonal number.

881128 is the 443-rd centered nonagonal number.

It is an amenable number.

881128 is a deficient number, since it is larger than the sum of its proper divisors (792152).

881128 is a wasteful number, since it uses less digits than its factorization.

881128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1412 counting only the distinct ones).

The product of its digits is 1024, while the sum is 28.

The square root of 881128 is about 938.6841854426. The cubic root of 881128 is about 95.8693245197.

The spelling of 881128 in words is "eight hundred eighty-one thousand, one hundred twenty-eight".