2081140 has 24 divisors (see below), whose sum is σ = 4628232. Its totient is φ = 783360.

The previous prime is 2081129. The next prime is 2081147. The reversal of 2081140 is 411802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 126736 + 1954404 = 356^2 + 1398^2 .

It is a super-2 number, since 2×2081140² = 8662287399200, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2721 + ... + 3400.

It is an arithmetic number, because the mean of its divisors is an integer number (192843).

2^2081140 is an apocalyptic number.

2081140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081140 is an abundant number, since it is smaller than the sum of its proper divisors (2547092).

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

2081140 is a wasteful number, since it uses less digits than its factorization.

2081140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147 (or 6145 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2081140 is about 1442.6156799370. The cubic root of 2081140 is about 127.6734024068.

Adding to 2081140 its reverse (411802), we get a palindrome (2492942).

The spelling of 2081140 in words is "two million, eighty-one thousand, one hundred forty".