11720266 has 4 divisors (see below), whose sum is σ = 17580402. Its totient is φ = 5860132.

The previous prime is 11720257. The next prime is 11720281. The reversal of 11720266 is 66202711.

11720266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 1766241 = 3155^2 + 1329^2 .

It is a super-2 number, since 2×11720266² = 274729270221512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11720266.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2930065 + ... + 2930068.

Almost surely, 2^11720266 is an apocalyptic number.

11720266 is a deficient number, since it is larger than the sum of its proper divisors (5860136).

11720266 is an equidigital number, since it uses as much as digits as its factorization.

11720266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5860135.

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

The square root of 11720266 is about 3423.4874032191. The cubic root of 11720266 is about 227.1498683655.

Adding to 11720266 its reverse (66202711), we get a palindrome (77922977).

The spelling of 11720266 in words is "eleven million, seven hundred twenty thousand, two hundred sixty-six".