2397440 has 36 divisors (see below), whose sum is σ = 5745684. Its totient is φ = 958464.

The previous prime is 2397403. The next prime is 2397449. The reversal of 2397440 is 447932.

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 2027776 = 608^2 + 1424^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2397449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344 + ... + 2216.

2^2397440 is an apocalyptic number.

2397440 is a gapful number since it is divisible by the number (20) 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 2397440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872842).

2397440 is an abundant number, since it is smaller than the sum of its proper divisors (3348244).

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

2397440 is an equidigital number, since it uses as much as digits as its factorization.

2397440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 2397440 is about 1548.3668815885. The cubic root of 2397440 is about 133.8389689596.

The spelling of 2397440 in words is "two million, three hundred ninety-seven thousand, four hundred forty".