11891922 has 32 divisors (see below), whose sum is σ = 27648000. Its totient is φ = 3339408.

The previous prime is 11891917. The next prime is 11891933. The reversal of 11891922 is 22919811.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79 + ... + 4877.

It is an arithmetic number, because the mean of its divisors is an integer number (864000).

Almost surely, 2^11891922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11891922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13824000).

11891922 is an abundant number, since it is smaller than the sum of its proper divisors (15756078).

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

11891922 is a wasteful number, since it uses less digits than its factorization.

11891922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870.

The product of its digits is 2592, while the sum is 33.

The square root of 11891922 is about 3448.4666157584. The cubic root of 11891922 is about 228.2534500722.

The spelling of 11891922 in words is "eleven million, eight hundred ninety-one thousand, nine hundred twenty-two".