11801216 has 32 divisors (see below), whose sum is σ = 26870880. Its totient is φ = 5057280.

The previous prime is 11801201. The next prime is 11801227. The reversal of 11801216 is 61210811.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5690 + ... + 7481.

It is an arithmetic number, because the mean of its divisors is an integer number (839715).

Almost surely, 2^11801216 is an apocalyptic number.

11801216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11801216 is an abundant number, since it is smaller than the sum of its proper divisors (15069664).

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

11801216 is an equidigital number, since it uses as much as digits as its factorization.

11801216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13192 (or 13180 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 11801216 is about 3435.2897985468. The cubic root of 11801216 is about 227.6716315439.

The spelling of 11801216 in words is "eleven million, eight hundred one thousand, two hundred sixteen".