2828305281 has 4 divisors (see below), whose sum is σ = 3771073712. Its totient is φ = 1885536852.

The previous prime is 2828305253. The next prime is 2828305297. The reversal of 2828305281 is 1825038282.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2828305281 - 2¹⁸ = 2828043137 is a prime.

It is a super-2 number, since 2×2828305281² = 15998621525064977922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2828305201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471384211 + ... + 471384216.

It is an arithmetic number, because the mean of its divisors is an integer number (942768428).

Almost surely, 2^2828305281 is an apocalyptic number.

It is an amenable number.

2828305281 is a deficient number, since it is larger than the sum of its proper divisors (942768431).

2828305281 is an equidigital number, since it uses as much as digits as its factorization.

2828305281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942768430.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 2828305281 is about 53181.8134421909. The cubic root of 2828305281 is about 1414.1932547905.

The spelling of 2828305281 in words is "two billion, eight hundred twenty-eight million, three hundred five thousand, two hundred eighty-one".