11530140 has 48 divisors (see below), whose sum is σ = 33331200. Its totient is φ = 2975040.

The previous prime is 11530133. The next prime is 11530157. The reversal of 11530140 is 4103511.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1240 + ... + 4959.

It is an arithmetic number, because the mean of its divisors is an integer number (694400).

Almost surely, 2^11530140 is an apocalyptic number.

11530140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11530140 is an abundant number, since it is smaller than the sum of its proper divisors (21801060).

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

11530140 is a wasteful number, since it uses less digits than its factorization.

11530140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242 (or 6240 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 11530140 is about 3395.6059842096. The cubic root of 11530140 is about 225.9148921191.

Adding to 11530140 its reverse (4103511), we get a palindrome (15633651).

The spelling of 11530140 in words is "eleven million, five hundred thirty thousand, one hundred forty".