2821921168 has 40 divisors (see below), whose sum is σ = 5967787680. Its totient is φ = 1281987840.

The previous prime is 2821921153. The next prime is 2821921177. The reversal of 2821921168 is 8611291282.

It is a self number, because there is not a number n which added to its sum of digits gives 2821921168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450796 + ... + 457012.

It is an arithmetic number, because the mean of its divisors is an integer number (149194692).

Almost surely, 2^2821921168 is an apocalyptic number.

It is an amenable number.

2821921168 is an abundant number, since it is smaller than the sum of its proper divisors (3145866512).

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

2821921168 is a wasteful number, since it uses less digits than its factorization.

2821921168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8815 (or 8809 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 2821921168 is about 53121.7579528389. The cubic root of 2821921168 is about 1413.1284037946.

The spelling of 2821921168 in words is "two billion, eight hundred twenty-one million, nine hundred twenty-one thousand, one hundred sixty-eight".