12191052 has 48 divisors (see below), whose sum is σ = 29473920. Its totient is φ = 3919872.

The previous prime is 12191051. The next prime is 12191077. The reversal of 12191052 is 25019121.

It is not an unprimeable number, because it can be changed into a prime (12191051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47308 + ... + 47564.

It is an arithmetic number, because the mean of its divisors is an integer number (614040).

Almost surely, 2^12191052 is an apocalyptic number.

12191052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12191052 is an abundant number, since it is smaller than the sum of its proper divisors (17282868).

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

12191052 is a wasteful number, since it uses less digits than its factorization.

12191052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 12191052 is about 3491.5687018874. The cubic root of 12191052 is about 230.1514566385.

The spelling of 12191052 in words is "twelve million, one hundred ninety-one thousand, fifty-two".