11321240 has 32 divisors (see below), whose sum is σ = 29112480. Its totient is φ = 3881472.

The previous prime is 11321203. The next prime is 11321243. The reversal of 11321240 is 4212311.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19937 + ... + 20496.

It is an arithmetic number, because the mean of its divisors is an integer number (909765).

Almost surely, 2^11321240 is an apocalyptic number.

11321240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321240 is an abundant number, since it is smaller than the sum of its proper divisors (17791240).

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

11321240 is a wasteful number, since it uses less digits than its factorization.

11321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40451 (or 40447 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11321240 is about 3364.7050390785. The cubic root of 11321240 is about 224.5422132481.

Adding to 11321240 its reverse (4212311), we get a palindrome (15533551).

The spelling of 11321240 in words is "eleven million, three hundred twenty-one thousand, two hundred forty".