11920656 has 80 divisors (see below), whose sum is σ = 34069248. Its totient is φ = 3561600.

The previous prime is 11920639. The next prime is 11920661. The reversal of 11920656 is 65602911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56391 + ... + 56601.

Almost surely, 2^11920656 is an apocalyptic number.

11920656 is a gapful number since it is divisible by the number (16) 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 11920656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17034624).

11920656 is an abundant number, since it is smaller than the sum of its proper divisors (22148592).

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

11920656 is a wasteful number, since it uses less digits than its factorization.

11920656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 11920656 is about 3452.6303016686. The cubic root of 11920656 is about 228.4371422528.

The spelling of 11920656 in words is "eleven million, nine hundred twenty thousand, six hundred fifty-six".