11171680 has 96 divisors (see below), whose sum is σ = 29338848. Its totient is φ = 3993600.

The previous prime is 11171663. The next prime is 11171683. The reversal of 11171680 is 8617111.

11171680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11171683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85215 + ... + 85345.

It is an arithmetic number, because the mean of its divisors is an integer number (305613).

Almost surely, 2^11171680 is an apocalyptic number.

11171680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11171680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14669424).

11171680 is an abundant number, since it is smaller than the sum of its proper divisors (18167168).

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

11171680 is a wasteful number, since it uses less digits than its factorization.

11171680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 11171680 is about 3342.4063188069. The cubic root of 11171680 is about 223.5490502544.

Adding to 11171680 its reverse (8617111), we get a palindrome (19788791).

The spelling of 11171680 in words is "eleven million, one hundred seventy-one thousand, six hundred eighty".