2828640581 has 16 divisors (see below), whose sum is σ = 3141161856. Its totient is φ = 2530871616.

The previous prime is 2828640517. The next prime is 2828640589. The reversal of 2828640581 is 1850468282.

It is not a de Polignac number, because 2828640581 - 2⁶ = 2828640517 is a prime.

It is a super-2 number, since 2×2828640581² = 16002415072960035122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828640589) 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, 32456 + ... + 81918.

It is an arithmetic number, because the mean of its divisors is an integer number (196322616).

Almost surely, 2^2828640581 is an apocalyptic number.

It is an amenable number.

2828640581 is a deficient number, since it is larger than the sum of its proper divisors (312521275).

2828640581 is a wasteful number, since it uses less digits than its factorization.

2828640581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49612.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 2828640581 is about 53184.9657422095. The cubic root of 2828640581 is about 1414.2491375205.

The spelling of 2828640581 in words is "two billion, eight hundred twenty-eight million, six hundred forty thousand, five hundred eighty-one".