2440321 has 8 divisors (see below), whose sum is σ = 2719080. Its totient is φ = 2174592.

The previous prime is 2440313. The next prime is 2440327. The reversal of 2440321 is 1230442.

It can be written as a sum of positive squares in 4 ways, for example, as 3600 + 2436721 = 60^2 + 1561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2440321 - 2³ = 2440313 is a prime.

2440321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2440295 and 2440304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (339885).

2^2440321 is an apocalyptic number.

It is an amenable number.

2440321 is a deficient number, since it is larger than the sum of its proper divisors (278759).

2440321 is a wasteful number, since it uses less digits than its factorization.

2440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6515.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2440321 is about 1562.1526813983. The cubic root of 2440321 is about 134.6322133812.

Adding to 2440321 its reverse (1230442), we get a palindrome (3670763).

The spelling of 2440321 in words is "two million, four hundred forty thousand, three hundred twenty-one".