2213717856 has 96 divisors (see below), whose sum is σ = 6648542208. Its totient is φ = 631787520.

The previous prime is 2213717839. The next prime is 2213717897. The reversal of 2213717856 is 6587173122.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 1062736 + ... + 1064816.

It is an arithmetic number, because the mean of its divisors is an integer number (69255648).

Almost surely, 2^2213717856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2213717856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3324271104).

2213717856 is an abundant number, since it is smaller than the sum of its proper divisors (4434824352).

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

2213717856 is a wasteful number, since it uses less digits than its factorization.

2213717856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684 (or 3676 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 2213717856 is about 47050.1631878148. The cubic root of 2213717856 is about 1303.2890789078.

It can be divided in two parts, 22137 and 17856, that added together give a palindrome (39993).

The spelling of 2213717856 in words is "two billion, two hundred thirteen million, seven hundred seventeen thousand, eight hundred fifty-six".