11540340 has 192 divisors, whose sum is σ = 42577920. Its totient is φ = 2540160.

The previous prime is 11540327. The next prime is 11540357. The reversal of 11540340 is 4304511.

It is a happy number.

It is a super-3 number, since 3×11540340³ (a number of 22 digits) contains 333 as substring.

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 63 ways as a sum of consecutive naturals, for example, 162505 + ... + 162575.

It is an arithmetic number, because the mean of its divisors is an integer number (221760).

Almost surely, 2^11540340 is an apocalyptic number.

11540340 is a gapful number since it is divisible by the number (10) 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 11540340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21288960).

11540340 is an abundant number, since it is smaller than the sum of its proper divisors (31037580).

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

11540340 is a wasteful number, since it uses less digits than its factorization.

11540340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 11540340 is about 3397.1075932328. The cubic root of 11540340 is about 225.9814901174.

Adding to 11540340 its reverse (4304511), we get a palindrome (15844851).

The spelling of 11540340 in words is "eleven million, five hundred forty thousand, three hundred forty".