12189048 has 64 divisors (see below), whose sum is σ = 32054400. Its totient is φ = 3857280.

The previous prime is 12189043. The next prime is 12189053. The reversal of 12189048 is 84098121.

It is an interprime number because it is at equal distance from previous prime (12189043) and next prime (12189053).

It is a super-2 number, since 2×12189048² = 297145782292608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189041) 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, 57663 + ... + 57873.

It is an arithmetic number, because the mean of its divisors is an integer number (500850).

Almost surely, 2^12189048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12189048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16027200).

12189048 is an abundant number, since it is smaller than the sum of its proper divisors (19865352).

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

12189048 is a wasteful number, since it uses less digits than its factorization.

12189048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 12189048 is about 3491.2817130676. The cubic root of 12189048 is about 230.1388449625.

The spelling of 12189048 in words is "twelve million, one hundred eighty-nine thousand, forty-eight".