2443820 has 24 divisors (see below), whose sum is σ = 5207328. Its totient is φ = 963200.

The previous prime is 2443817. The next prime is 2443829. The reversal of 2443820 is 283442.

It is not an unprimeable number, because it can be changed into a prime (2443829) 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, 560 + ... + 2280.

It is an arithmetic number, because the mean of its divisors is an integer number (216972).

2^2443820 is an apocalyptic number.

2443820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2443820 is an abundant number, since it is smaller than the sum of its proper divisors (2763508).

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

2443820 is a wasteful number, since it uses less digits than its factorization.

2443820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2443820 is about 1563.2722091818. The cubic root of 2443820 is about 134.6965291202.

The spelling of 2443820 in words is "two million, four hundred forty-three thousand, eight hundred twenty".