2917216820 has 48 divisors (see below), whose sum is σ = 7040062848. Its totient is φ = 994654080.

The previous prime is 2917216811. The next prime is 2917216823. The reversal of 2917216820 is 286127192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2917216823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32222 + ... + 82901.

It is an arithmetic number, because the mean of its divisors is an integer number (146667976).

Almost surely, 2^2917216820 is an apocalyptic number.

2917216820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2917216820 is an abundant number, since it is smaller than the sum of its proper divisors (4122846028).

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

2917216820 is a wasteful number, since it uses less digits than its factorization.

2917216820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115320 (or 115318 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2917216820 is about 54011.2656767086. The cubic root of 2917216820 is about 1428.8596414970.

The spelling of 2917216820 in words is "two billion, nine hundred seventeen million, two hundred sixteen thousand, eight hundred twenty".