11891208 has 64 divisors (see below), whose sum is σ = 34911360. Its totient is φ = 3303936.

The previous prime is 11891203. The next prime is 11891251. The reversal of 11891208 is 80219811.

It is not an unprimeable number, because it can be changed into a prime (11891203) 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, 5260 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (545490).

Almost surely, 2^11891208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11891208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17455680).

11891208 is an abundant number, since it is smaller than the sum of its proper divisors (23020152).

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

11891208 is a wasteful number, since it uses less digits than its factorization.

11891208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 11891208 is about 3448.3630899312. The cubic root of 11891208 is about 228.2488818107.

The spelling of 11891208 in words is "eleven million, eight hundred ninety-one thousand, two hundred eight".