12146940 has 144 divisors (see below), whose sum is σ = 41277600. Its totient is φ = 2870784.

The previous prime is 12146917. The next prime is 12146951. The reversal of 12146940 is 4964121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67771 + ... + 67949.

It is an arithmetic number, because the mean of its divisors is an integer number (286650).

Almost surely, 2^12146940 is an apocalyptic number.

12146940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12146940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20638800).

12146940 is an abundant number, since it is smaller than the sum of its proper divisors (29130660).

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

12146940 is a wasteful number, since it uses less digits than its factorization.

12146940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12146940 is about 3485.2460458338. The cubic root of 12146940 is about 229.8735284527.

The spelling of 12146940 in words is "twelve million, one hundred forty-six thousand, nine hundred forty".