881284 has 12 divisors (see below), whose sum is σ = 1571724. Its totient is φ = 432224.

The previous prime is 881273. The next prime is 881311. The reversal of 881284 is 482188.

881284 = T₇₆₅ + T₇₆₆ + T₇₆₇.

881284 = 180² + 181² + ... + 203².

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 360000 = 722^2 + 600^2 .

It is a super-2 number, since 2×881284² = 1553322977312, which contains 22 as substring.

It is an unprimeable number.

881284 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1867 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (130977).

2⁸⁸¹²⁸⁴ is an apocalyptic number.

881284 is the 767-th centered triangular number.

It is an amenable number.

881284 is a deficient number, since it is larger than the sum of its proper divisors (690440).

881284 is a wasteful number, since it uses less digits than its factorization.

881284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214 (or 4212 counting only the distinct ones).

The product of its digits is 4096, while the sum is 31.

The square root of 881284 is about 938.7672768051. The cubic root of 881284 is about 95.8749819391.

The spelling of 881284 in words is "eight hundred eighty-one thousand, two hundred eighty-four".