2011140 has 36 divisors (see below), whose sum is σ = 6101004. Its totient is φ = 536256.

The previous prime is 2011129. The next prime is 2011147. The reversal of 2011140 is 411102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 831744 + 1179396 = 912^2 + 1086^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (2011147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5407 + ... + 5766.

2^2011140 is an apocalyptic number.

2011140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011140 is an abundant number, since it is smaller than the sum of its proper divisors (4089864).

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

2011140 is a wasteful number, since it uses less digits than its factorization.

2011140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11188 (or 11183 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2011140 is about 1418.1466778863. The cubic root of 2011140 is about 126.2255973487.

Adding to 2011140 its reverse (411102), we get a palindrome (2422242).

The spelling of 2011140 in words is "two million, eleven thousand, one hundred forty".