12397040 has 40 divisors (see below), whose sum is σ = 28987728. Its totient is φ = 4930560.

The previous prime is 12397037. The next prime is 12397051. The reversal of 12397040 is 4079321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18959 + ... + 19601.

Almost surely, 2^12397040 is an apocalyptic number.

12397040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12397040 is an abundant number, since it is smaller than the sum of its proper divisors (16590688).

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

12397040 is a wasteful number, since it uses less digits than its factorization.

12397040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12397040 is about 3520.9430554895. The cubic root of 12397040 is about 231.4404868267.

The spelling of 12397040 in words is "twelve million, three hundred ninety-seven thousand, forty".