11403216 has 120 divisors (see below), whose sum is σ = 36444096. Its totient is φ = 3294720.

The previous prime is 11403151. The next prime is 11403221. The reversal of 11403216 is 61230411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36276 + ... + 36588.

Almost surely, 2^11403216 is an apocalyptic number.

11403216 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 11403216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18222048).

11403216 is an abundant number, since it is smaller than the sum of its proper divisors (25040880).

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

11403216 is a wasteful number, since it uses less digits than its factorization.

11403216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 11403216 is about 3376.8648181412. The cubic root of 11403216 is about 225.0828731757.

Adding to 11403216 its reverse (61230411), we get a palindrome (72633627).

It can be divided in two parts, 1140 and 3216, that added together give a square (4356 = 66²).

The spelling of 11403216 in words is "eleven million, four hundred three thousand, two hundred sixteen".