11356640 has 24 divisors (see below), whose sum is σ = 26830440. Its totient is φ = 4542592.

The previous prime is 11356621. The next prime is 11356649. The reversal of 11356640 is 4665311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11356649) by changing a digit.

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, 35330 + ... + 35649.

It is an arithmetic number, because the mean of its divisors is an integer number (1117935).

Almost surely, 2^11356640 is an apocalyptic number.

11356640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11356640 is an abundant number, since it is smaller than the sum of its proper divisors (15473800).

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

11356640 is an equidigital number, since it uses as much as digits as its factorization.

11356640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70994 (or 70986 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 11356640 is about 3369.9614241116. The cubic root of 11356640 is about 224.7760075372.

The spelling of 11356640 in words is "eleven million, three hundred fifty-six thousand, six hundred forty".