12297440 has 48 divisors (see below), whose sum is σ = 29302560. Its totient is φ = 4876800.

The previous prime is 12297419. The next prime is 12297463. The reversal of 12297440 is 4479221.

12297440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23906 + ... + 24414.

It is an arithmetic number, because the mean of its divisors is an integer number (610470).

Almost surely, 2^12297440 is an apocalyptic number.

12297440 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 12297440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14651280).

12297440 is an abundant number, since it is smaller than the sum of its proper divisors (17005120).

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

12297440 is a wasteful number, since it uses less digits than its factorization.

12297440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12297440 is about 3506.7705941507. The cubic root of 12297440 is about 230.8190082934.

The spelling of 12297440 in words is "twelve million, two hundred ninety-seven thousand, four hundred forty".