2820004720 has 80 divisors (see below), whose sum is σ = 7069672512. Its totient is φ = 1039933440.

The previous prime is 2820004711. The next prime is 2820004721. The reversal of 2820004720 is 274000282.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820004721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354080 + ... + 1356160.

Almost surely, 2^2820004720 is an apocalyptic number.

2820004720 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 2820004720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3534836256).

2820004720 is an abundant number, since it is smaller than the sum of its proper divisors (4249667792).

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

2820004720 is a wasteful number, since it uses less digits than its factorization.

2820004720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410 (or 3404 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2820004720 is about 53103.7166307595. The cubic root of 2820004720 is about 1412.8084326068.

The spelling of 2820004720 in words is "two billion, eight hundred twenty million, four thousand, seven hundred twenty".