811146 has 48 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 221760.

The previous prime is 811127. The next prime is 811147. The reversal of 811146 is 641118.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (811147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9070 + ... + 9158.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2⁸¹¹¹⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984960).

811146 is an abundant number, since it is smaller than the sum of its proper divisors (1158774).

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

811146 is a wasteful number, since it uses less digits than its factorization.

811146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 132 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 811146 is about 900.6364416345. The cubic root of 811146 is about 93.2609160482.

It can be divided in two parts, 81114 and 6, that multiplied together give a palindrome (486684).

The spelling of 811146 in words is "eight hundred eleven thousand, one hundred forty-six".