11316640 has 24 divisors (see below), whose sum is σ = 26735940. Its totient is φ = 4526592.

The previous prime is 11316629. The next prime is 11316661. The reversal of 11316640 is 4661311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 144 = 3364^2 + 12^2 .

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 3 ways as a sum of consecutive naturals, for example, 35205 + ... + 35524.

Almost surely, 2^11316640 is an apocalyptic number.

11316640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11316640 is an abundant number, since it is smaller than the sum of its proper divisors (15419300).

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

11316640 is an equidigital number, since it uses as much as digits as its factorization.

11316640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70744 (or 70736 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 11316640 is about 3364.0214030235. The cubic root of 11316640 is about 224.5117974366.

Adding to 11316640 its reverse (4661311), we get a palindrome (15977951).

The spelling of 11316640 in words is "eleven million, three hundred sixteen thousand, six hundred forty".