2043920 has 40 divisors (see below), whose sum is σ = 4921560. Its totient is φ = 788480.

The previous prime is 2043911. The next prime is 2043931. The reversal of 2043920 is 293402.

It can be written as a sum of positive squares in 4 ways, for example, as 50176 + 1993744 = 224^2 + 1412^2 .

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

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

It is a junction number, because it is equal to n+sod(n) for n = 2043892 and 2043901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880 + ... + 2760.

It is an arithmetic number, because the mean of its divisors is an integer number (123039).

2^2043920 is an apocalyptic number.

2043920 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 2043920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460780).

2043920 is an abundant number, since it is smaller than the sum of its proper divisors (2877640).

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

2043920 is a wasteful number, since it uses less digits than its factorization.

2043920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2043920 is about 1429.6573015936. The cubic root of 2043920 is about 126.9076974137.

The spelling of 2043920 in words is "two million, forty-three thousand, nine hundred twenty".