2821216770 has 32 divisors (see below), whose sum is σ = 7523245440. Its totient is φ = 752324400.

The previous prime is 2821216763. The next prime is 2821216781. The reversal of 2821216770 is 776121282.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5224206 + ... + 5224745.

It is an arithmetic number, because the mean of its divisors is an integer number (235101420).

Almost surely, 2^2821216770 is an apocalyptic number.

2821216770 is an abundant number, since it is smaller than the sum of its proper divisors (4702028670).

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

2821216770 is a wasteful number, since it uses less digits than its factorization.

2821216770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10448967 (or 10448961 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 2821216770 is about 53115.1275062011. The cubic root of 2821216770 is about 1413.0108139687.

The spelling of 2821216770 in words is "two billion, eight hundred twenty-one million, two hundred sixteen thousand, seven hundred seventy".