11857216 has 84 divisors (see below), whose sum is σ = 28956000. Its totient is φ = 4790016.

The previous prime is 11857193. The next prime is 11857217. The reversal of 11857216 is 61275811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857217) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 59485 + ... + 59683.

Almost surely, 2^11857216 is an apocalyptic number.

11857216 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 11857216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14478000).

11857216 is an abundant number, since it is smaller than the sum of its proper divisors (17098784).

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

11857216 is a wasteful number, since it uses less digits than its factorization.

11857216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 227 counting only the distinct ones).

The product of its digits is 3360, while the sum is 31.

The square root of 11857216 is about 3443.4308472801. The cubic root of 11857216 is about 228.0311848183.

The spelling of 11857216 in words is "eleven million, eight hundred fifty-seven thousand, two hundred sixteen".