11320040 has 16 divisors (see below), whose sum is σ = 25470180. Its totient is φ = 4528000.

The previous prime is 11320031. The next prime is 11320061. The reversal of 11320040 is 4002311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10484644 + 835396 = 3238^2 + 914^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141461 + ... + 141540.

Almost surely, 2^11320040 is an apocalyptic number.

11320040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11320040 is an abundant number, since it is smaller than the sum of its proper divisors (14150140).

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

11320040 is a wasteful number, since it uses less digits than its factorization.

11320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283012 (or 283008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 11320040 is about 3364.5267126299. The cubic root of 11320040 is about 224.5342794830.

Adding to 11320040 its reverse (4002311), we get a palindrome (15322351).

The spelling of 11320040 in words is "eleven million, three hundred twenty thousand, forty".