12997544 has 48 divisors (see below), whose sum is σ = 28810080. Its totient is φ = 5480160.

The previous prime is 12997541. The next prime is 12997549. The reversal of 12997544 is 44579921.

It is not an unprimeable number, because it can be changed into a prime (12997541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27599 + ... + 28065.

It is an arithmetic number, because the mean of its divisors is an integer number (600210).

Almost surely, 2^12997544 is an apocalyptic number.

12997544 is a gapful number since it is divisible by the number (14) 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 12997544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14405040).

12997544 is an abundant number, since it is smaller than the sum of its proper divisors (15812536).

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

12997544 is a wasteful number, since it uses less digits than its factorization.

12997544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 547 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 12997544 is about 3605.2106734559. The cubic root of 12997544 is about 235.1186604600.

The spelling of 12997544 in words is "twelve million, nine hundred ninety-seven thousand, five hundred forty-four".