11662720 has 32 divisors (see below), whose sum is σ = 27882720. Its totient is φ = 4664832.

The previous prime is 11662711. The next prime is 11662769. The reversal of 11662720 is 2726611.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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, 8472 + ... + 9751.

It is an arithmetic number, because the mean of its divisors is an integer number (871335).

Almost surely, 2^11662720 is an apocalyptic number.

11662720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11662720 is an abundant number, since it is smaller than the sum of its proper divisors (16220000).

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

11662720 is an equidigital number, since it uses as much as digits as its factorization.

11662720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18242 (or 18230 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 11662720 is about 3415.0724736087. The cubic root of 11662720 is about 226.7774929011. Note that the first 3 decimals are identical.

The spelling of 11662720 in words is "eleven million, six hundred sixty-two thousand, seven hundred twenty".