2281140 has 144 divisors (see below), whose sum is σ = 7862400. Its totient is φ = 532224.

The previous prime is 2281127. The next prime is 2281151. The reversal of 2281140 is 411822.

2281140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 78646 + ... + 78674.

It is an arithmetic number, because the mean of its divisors is an integer number (54600).

2^2281140 is an apocalyptic number.

2281140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2281140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3931200).

2281140 is an abundant number, since it is smaller than the sum of its proper divisors (5581260).

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

2281140 is a wasteful number, since it uses less digits than its factorization.

2281140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2281140 is about 1510.3443316012. The cubic root of 2281140 is about 131.6388197977.

Adding to 2281140 its reverse (411822), we get a palindrome (2692962).

The spelling of 2281140 in words is "two million, two hundred eighty-one thousand, one hundred forty".