11540140 has 12 divisors (see below), whose sum is σ = 24234336. Its totient is φ = 4616048.

The previous prime is 11540131. The next prime is 11540141. The reversal of 11540140 is 4104511.

It is not an unprimeable number, because it can be changed into a prime (11540141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288484 + ... + 288523.

It is an arithmetic number, because the mean of its divisors is an integer number (2019528).

Almost surely, 2^11540140 is an apocalyptic number.

11540140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11540140 is an abundant number, since it is smaller than the sum of its proper divisors (12694196).

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

11540140 is a wasteful number, since it uses less digits than its factorization.

11540140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577016 (or 577014 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 11540140 is about 3397.0781562984. The cubic root of 11540140 is about 225.9801846516.

Adding to 11540140 its reverse (4104511), we get a palindrome (15644651).

The spelling of 11540140 in words is "eleven million, five hundred forty thousand, one hundred forty".