11920711 has 8 divisors (see below), whose sum is σ = 13453200. Its totient is φ = 10463040.

The previous prime is 11920703. The next prime is 11920721. The reversal of 11920711 is 11702911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11920711 - 2³ = 11920703 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 (11920721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18366 + ... + 19003.

It is an arithmetic number, because the mean of its divisors is an integer number (1681650).

Almost surely, 2^11920711 is an apocalyptic number.

11920711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11920711 is a deficient number, since it is larger than the sum of its proper divisors (1532489).

11920711 is a wasteful number, since it uses less digits than its factorization.

11920711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37409.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 11920711 is about 3452.6382666014. The cubic root of 11920711 is about 228.4374935764.

The spelling of 11920711 in words is "eleven million, nine hundred twenty thousand, seven hundred eleven".