2343440 has 40 divisors (see below), whose sum is σ = 5946048. Its totient is φ = 851840.

The previous prime is 2343413. The next prime is 2343449. The reversal of 2343440 is 443432.

It is a happy number.

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

It is a super-2 number, since 2×2343440² = 10983422067200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2343449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 2211.

2^2343440 is an apocalyptic number.

2343440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2343440 is an abundant number, since it is smaller than the sum of its proper divisors (3602608).

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

2343440 is a wasteful number, since it uses less digits than its factorization.

2343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687 (or 2681 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 2343440 is about 1530.8298403154. The cubic root of 2343440 is about 132.8264644602.

Adding to 2343440 its reverse (443432), we get a palindrome (2786872).

The spelling of 2343440 in words is "two million, three hundred forty-three thousand, four hundred forty".