2443720 has 32 divisors (see below), whose sum is σ = 5544000. Its totient is φ = 969408.

The previous prime is 2443703. The next prime is 2443729. The reversal of 2443720 is 273442.

It is a junction number, because it is equal to n+sod(n) for n = 2443691 and 2443700.

It is not an unprimeable number, because it can be changed into a prime (2443729) 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, 7807 + ... + 8113.

It is an arithmetic number, because the mean of its divisors is an integer number (173250).

2^2443720 is an apocalyptic number.

2443720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2443720 is an abundant number, since it is smaller than the sum of its proper divisors (3100280).

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

2443720 is a wasteful number, since it uses less digits than its factorization.

2443720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2443720 is about 1563.2402246616. The cubic root of 2443720 is about 134.6946918549.

The spelling of 2443720 in words is "two million, four hundred forty-three thousand, seven hundred twenty".