11401216 has 48 divisors (see below), whose sum is σ = 24078600. Its totient is φ = 5382144.

The previous prime is 11401207. The next prime is 11401231. The reversal of 11401216 is 61210411.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a self number, because there is not a number n which added to its sum of digits gives 11401216.

It is a congruent number.

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, 38766 + ... + 39058.

Almost surely, 2^11401216 is an apocalyptic number.

11401216 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 11401216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12039300).

11401216 is an abundant number, since it is smaller than the sum of its proper divisors (12677384).

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

11401216 is an equidigital number, since it uses as much as digits as its factorization.

11401216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 11401216 is about 3376.5686724839. The cubic root of 11401216 is about 225.0697133774.

Adding to 11401216 its reverse (61210411), we get a palindrome (72611627).

The spelling of 11401216 in words is "eleven million, four hundred one thousand, two hundred sixteen".