2443320 has 96 divisors (see below), whose sum is σ = 8676720. Its totient is φ = 591360.

The previous prime is 2443283. The next prime is 2443351. The reversal of 2443320 is 233442.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2443293 and 2443302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3652 + ... + 4268.

2^2443320 is an apocalyptic number.

2443320 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 2443320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4338360).

2443320 is an abundant number, since it is smaller than the sum of its proper divisors (6233400).

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

2443320 is a wasteful number, since it uses less digits than its factorization.

2443320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 2443320 is about 1563.1122800362. The cubic root of 2443320 is about 134.6873422927.

Adding to 2443320 its reverse (233442), we get a palindrome (2676762).

The spelling of 2443320 in words is "two million, four hundred forty-three thousand, three hundred twenty".