2820129266 has 4 divisors (see below), whose sum is σ = 4230193902. Its totient is φ = 1410064632.

The previous prime is 2820129229. The next prime is 2820129271. The reversal of 2820129266 is 6629210282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2716598641 + 103530625 = 52121^2 + 10175^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705032315 + ... + 705032318.

Almost surely, 2^2820129266 is an apocalyptic number.

2820129266 is a deficient number, since it is larger than the sum of its proper divisors (1410064636).

2820129266 is a wasteful number, since it uses less digits than its factorization.

2820129266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410064635.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 2820129266 is about 53104.8892852626. The cubic root of 2820129266 is about 1412.8292312775.

The spelling of 2820129266 in words is "two billion, eight hundred twenty million, one hundred twenty-nine thousand, two hundred sixty-six".