11491656 has 128 divisors (see below), whose sum is σ = 34560000. Its totient is φ = 3144960.

The previous prime is 11491633. The next prime is 11491661. The reversal of 11491656 is 65619411.

11491656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145425 + ... + 145503.

It is an arithmetic number, because the mean of its divisors is an integer number (270000).

Almost surely, 2^11491656 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 11491656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17280000).

11491656 is an abundant number, since it is smaller than the sum of its proper divisors (23068344).

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

11491656 is a wasteful number, since it uses less digits than its factorization.

11491656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 143 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 11491656 is about 3389.9345126418. The cubic root of 11491656 is about 225.6632675530.

The spelling of 11491656 in words is "eleven million, four hundred ninety-one thousand, six hundred fifty-six".