11971746 has 64 divisors (see below), whose sum is σ = 27993600. Its totient is φ = 3788928.

The previous prime is 11971741. The next prime is 11971763. The reversal of 11971746 is 64717911.

11971746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11971746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11971741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134470 + ... + 134558.

It is an arithmetic number, because the mean of its divisors is an integer number (437400).

Almost surely, 2^11971746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11971746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13996800).

11971746 is an abundant number, since it is smaller than the sum of its proper divisors (16021854).

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

11971746 is a wasteful number, since it uses less digits than its factorization.

11971746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 194 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 11971746 is about 3460.0210982016. The cubic root of 11971746 is about 228.7630253266.

The spelling of 11971746 in words is "eleven million, nine hundred seventy-one thousand, seven hundred forty-six".