2821991282 has 12 divisors (see below), whose sum is σ = 4652787678. Its totient is φ = 1282723200.

The previous prime is 2821991273. The next prime is 2821991303.

2821991282 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 1985682721 + 836308561 = 44561^2 + 28919^2 .

It is a super-3 number, since 3×2821991282³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5830319 + ... + 5830802.

Almost surely, 2^2821991282 is an apocalyptic number.

2821991282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2821991282 is a deficient number, since it is larger than the sum of its proper divisors (1830796396).

2821991282 is a wasteful number, since it uses less digits than its factorization.

2821991282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11661145 (or 11661134 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 2821991282 is about 53122.4178854841. The cubic root of 2821991282 is about 1413.1401073183.

The spelling of 2821991282 in words is "two billion, eight hundred twenty-one million, nine hundred ninety-one thousand, two hundred eighty-two".