881728 has 28 divisors (see below), whose sum is σ = 1828800. Its totient is φ = 420992.

The previous prime is 881711. The next prime is 881729. The reversal of 881728 is 827188.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 881693 and 881702.

It is not an unprimeable number, because it can be changed into a prime (881729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173 + ... + 1771.

2⁸⁸¹⁷²⁸ 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 881728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914400).

881728 is an abundant number, since it is smaller than the sum of its proper divisors (947072).

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

881728 is a wasteful number, since it uses less digits than its factorization.

881728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 624 counting only the distinct ones).

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

The square root of 881728 is about 939.0037273621. The cubic root of 881728 is about 95.8910801720.

The spelling of 881728 in words is "eight hundred eighty-one thousand, seven hundred twenty-eight".