2821162512 has 160 divisors (see below), whose sum is σ = 8854790400. Its totient is φ = 758188032.

The previous prime is 2821162511. The next prime is 2821162549. The reversal of 2821162512 is 2152611282.

It is a super-2 number, since 2×2821162512² = 15917915838228300288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2821162512.

It is not an unprimeable number, because it can be changed into a prime (2821162511) 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 31 ways as a sum of consecutive naturals, for example, 1649914 + ... + 1651622.

It is an arithmetic number, because the mean of its divisors is an integer number (55342440).

Almost surely, 2^2821162512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2821162512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4427395200).

2821162512 is an abundant number, since it is smaller than the sum of its proper divisors (6033627888).

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

2821162512 is a wasteful number, since it uses less digits than its factorization.

2821162512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778 (or 1738 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 2821162512 is about 53114.6167452990. The cubic root of 2821162512 is about 1413.0017555094.

Adding to 2821162512 its reverse (2152611282), we get a palindrome (4973773794).

The spelling of 2821162512 in words is "two billion, eight hundred twenty-one million, one hundred sixty-two thousand, five hundred twelve".