12997140 has 96 divisors (see below), whose sum is σ = 41301120. Its totient is φ = 3027456.

The previous prime is 12997111. The next prime is 12997151. The reversal of 12997140 is 4179921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14382 + ... + 15258.

It is an arithmetic number, because the mean of its divisors is an integer number (430220).

Almost surely, 2^12997140 is an apocalyptic number.

12997140 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 12997140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20650560).

12997140 is an abundant number, since it is smaller than the sum of its proper divisors (28303980).

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

12997140 is a wasteful number, since it uses less digits than its factorization.

12997140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 12997140 is about 3605.1546430077. The cubic root of 12997140 is about 235.1162243864.

The spelling of 12997140 in words is "twelve million, nine hundred ninety-seven thousand, one hundred forty".