3028721280 has 128 divisors (see below), whose sum is σ = 10396753920. Its totient is φ = 745525248.

The previous prime is 3028721279. The next prime is 3028721287. The reversal of 3028721280 is 821278203.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (3028721287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35712 + ... + 85631.

It is an arithmetic number, because the mean of its divisors is an integer number (81224640).

Almost surely, 2^3028721280 is an apocalyptic number.

3028721280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3028721280 is an abundant number, since it is smaller than the sum of its proper divisors (7368032640).

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

3028721280 is a wasteful number, since it uses less digits than its factorization.

3028721280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121378 (or 121366 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 3028721280 is about 55033.8194204255. The cubic root of 3028721280 is about 1446.8375436722.

Adding to 3028721280 its reverse (821278203), we get a palindrome (3849999483).

The spelling of 3028721280 in words is "three billion, twenty-eight million, seven hundred twenty-one thousand, two hundred eighty".