12191848 has 8 divisors (see below), whose sum is σ = 22859730. Its totient is φ = 6095920.

The previous prime is 12191831. The next prime is 12191849. The reversal of 12191848 is 84819121.

It can be written as a sum of positive squares in only one way, i.e., 6441444 + 5750404 = 2538^2 + 2398^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12191849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761983 + ... + 761998.

Almost surely, 2^12191848 is an apocalyptic number.

It is an amenable number.

12191848 is a deficient number, since it is larger than the sum of its proper divisors (10667882).

12191848 is a wasteful number, since it uses less digits than its factorization.

12191848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523987 (or 1523983 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The square root of 12191848 is about 3491.6826889052. The cubic root of 12191848 is about 230.1564656832.

The spelling of 12191848 in words is "twelve million, one hundred ninety-one thousand, eight hundred forty-eight".