11520711 has 10 divisors (see below), whose sum is σ = 17210072. Its totient is φ = 7680420.

The previous prime is 11520709. The next prime is 11520739. The reversal of 11520711 is 11702511.

It is a happy number.

It is not a de Polignac number, because 11520711 - 2¹ = 11520709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520701) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 71035 + ... + 71196.

Almost surely, 2^11520711 is an apocalyptic number.

11520711 is a deficient number, since it is larger than the sum of its proper divisors (5689361).

11520711 is an equidigital number, since it uses as much as digits as its factorization.

11520711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142243 (or 142234 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 11520711 is about 3394.2172882713. The cubic root of 11520711 is about 225.8532932013.

The spelling of 11520711 in words is "eleven million, five hundred twenty thousand, seven hundred eleven".