8111140 has 48 divisors (see below), whose sum is σ = 17830512. Its totient is φ = 3096576.

The previous prime is 8111123. The next prime is 8111149. The reversal of 8111140 is 411118.

It can be written as a sum of positive squares in 8 ways, for example, as 304704 + 7806436 = 552^2 + 2794^2 .

It is not an unprimeable number, because it can be changed into a prime (8111149) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 71724 + ... + 71836.

It is an arithmetic number, because the mean of its divisors is an integer number (371469).

Almost surely, 2^8111140 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 8111140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8915256).

8111140 is an abundant number, since it is smaller than the sum of its proper divisors (9719372).

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

8111140 is a wasteful number, since it uses less digits than its factorization.

8111140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 8111140 is about 2848.0063202177. The cubic root of 8111140 is about 200.9219105419.

Adding to 8111140 its reverse (411118), we get a palindrome (8522258).

The spelling of 8111140 in words is "eight million, one hundred eleven thousand, one hundred forty".