881790 has 128 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 165888.

The previous prime is 881779. The next prime is 881813. The reversal of 881790 is 97188.

It is a congruent number.

It is an unprimeable number.

881790 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 (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46401 + ... + 46419.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2⁸⁸¹⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 881790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520).

881790 is an abundant number, since it is smaller than the sum of its proper divisors (2021250).

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

881790 is a wasteful number, since it uses less digits than its factorization.

881790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 881790 is about 939.0367404953. The cubic root of 881790 is about 95.8933276934.

The spelling of 881790 in words is "eight hundred eighty-one thousand, seven hundred ninety".