11187216 has 30 divisors (see below), whose sum is σ = 31309070. Its totient is φ = 3729024.

The previous prime is 11187203. The next prime is 11187221. The reversal of 11187216 is 61278111.

It can be written as a sum of positive squares in only one way, i.e., 10265616 + 921600 = 3204^2 + 960^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11187216.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38701 + ... + 38988.

Almost surely, 2^11187216 is an apocalyptic number.

11187216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11187216 is an abundant number, since it is smaller than the sum of its proper divisors (20121854).

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

11187216 is a wasteful number, since it uses less digits than its factorization.

11187216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77703 (or 77694 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 11187216 is about 3344.7295854822. The cubic root of 11187216 is about 223.6526291056.

The spelling of 11187216 in words is "eleven million, one hundred eighty-seven thousand, two hundred sixteen".