12397320 has 128 divisors (see below), whose sum is σ = 44553600. Its totient is φ = 3048192.

The previous prime is 12397313. The next prime is 12397321. The reversal of 12397320 is 2379321.

12397320 = T₂₃₆ + T₂₃₇ + ... + T₄₄₃.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12397321) 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 31 ways as a sum of consecutive naturals, for example, 13599 + ... + 14481.

It is an arithmetic number, because the mean of its divisors is an integer number (348075).

Almost surely, 2^12397320 is an apocalyptic number.

12397320 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 12397320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22276800).

12397320 is an abundant number, since it is smaller than the sum of its proper divisors (32156280).

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

12397320 is a wasteful number, since it uses less digits than its factorization.

12397320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 12397320 is about 3520.9828173395. The cubic root of 12397320 is about 231.4422292547.

The spelling of 12397320 in words is "twelve million, three hundred ninety-seven thousand, three hundred twenty".