11747856 has 20 divisors (see below), whose sum is σ = 30348752. Its totient is φ = 3915936.

The previous prime is 11747849. The next prime is 11747891. The reversal of 11747856 is 65874711.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122326 + ... + 122421.

Almost surely, 2^11747856 is an apocalyptic number.

11747856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11747856 is an abundant number, since it is smaller than the sum of its proper divisors (18600896).

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

11747856 is a wasteful number, since it uses less digits than its factorization.

11747856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244758 (or 244752 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 11747856 is about 3427.5145513914. The cubic root of 11747856 is about 227.3279688069.

The spelling of 11747856 in words is "eleven million, seven hundred forty-seven thousand, eight hundred fifty-six".