2821715890 has 16 divisors (see below), whose sum is σ = 5804672832. Its totient is φ = 967445424.

The previous prime is 2821715861. The next prime is 2821715893. The reversal of 2821715890 is 985171282.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2821715893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20155044 + ... + 20155183.

It is an arithmetic number, because the mean of its divisors is an integer number (362792052).

Almost surely, 2^2821715890 is an apocalyptic number.

2821715890 is an abundant number, since it is smaller than the sum of its proper divisors (2982956942).

2821715890 is a wasteful number, since it uses less digits than its factorization.

2821715890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40310241.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 2821715890 is about 53119.8257715516. The cubic root of 2821715890 is about 1413.0941373983.

The spelling of 2821715890 in words is "two billion, eight hundred twenty-one million, seven hundred fifteen thousand, eight hundred ninety".