12248091 has 20 divisors (see below), whose sum is σ = 18513000. Its totient is φ = 8068896.

The previous prime is 12248051. The next prime is 12248099. The reversal of 12248091 is 19084221.

It is not a de Polignac number, because 12248091 - 2⁹ = 12247579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12248099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6360 + ... + 8058.

It is an arithmetic number, because the mean of its divisors is an integer number (925650).

Almost surely, 2^12248091 is an apocalyptic number.

12248091 is a deficient number, since it is larger than the sum of its proper divisors (6264909).

12248091 is an equidigital number, since it uses as much as digits as its factorization.

12248091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12248091 is about 3499.7272750887. The cubic root of 12248091 is about 230.5098393919.

The spelling of 12248091 in words is "twelve million, two hundred forty-eight thousand, ninety-one".