11447872 has 14 divisors (see below), whose sum is σ = 22716998. Its totient is φ = 5723904.

The previous prime is 11447869. The next prime is 11447879. The reversal of 11447872 is 27874411.

It can be written as a sum of positive squares in only one way, i.e., 6885376 + 4562496 = 2624^2 + 2136^2 .

It is not an unprimeable number, because it can be changed into a prime (11447879) 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 as a sum of consecutive naturals, namely, 89373 + ... + 89500.

Almost surely, 2^11447872 is an apocalyptic number.

It is an amenable number.

11447872 is a deficient number, since it is larger than the sum of its proper divisors (11269126).

11447872 is an equidigital number, since it uses as much as digits as its factorization.

11447872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178885 (or 178875 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 11447872 is about 3383.4704077323. The cubic root of 11447872 is about 225.3763052701.

The spelling of 11447872 in words is "eleven million, four hundred forty-seven thousand, eight hundred seventy-two".