2043220804 has 27 divisors (see below), whose sum is σ = 3628451127. Its totient is φ = 1006738944.

The previous prime is 2043220789. The next prime is 2043220807. The reversal of 2043220804 is 4080223402.

The square root of 2043220804 is 45202.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 265755204 + 1777465600 = 16302^2 + 42160^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043220807) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8769072 + ... + 8769304.

Almost surely, 2^2043220804 is an apocalyptic number.

2043220804 is the 45202-nd square number.

It is an amenable number.

2043220804 is a deficient number, since it is larger than the sum of its proper divisors (1585230323).

2043220804 is an frugal number, since it uses more digits than its factorization.

2043220804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The cubic root of 2043220804 is about 1268.9322465634.

Multiplying 2043220804 by its sum of digits (25), we get a square (51080520100 = 226010²).

The spelling of 2043220804 in words is "two billion, forty-three million, two hundred twenty thousand, eight hundred four".