2211768944 has 80 divisors (see below), whose sum is σ = 5473149696. Its totient is φ = 840691200.

The previous prime is 2211768899. The next prime is 2211768947. The reversal of 2211768944 is 4498671122.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 2211768895 and 2211768904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211768947) 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, 28619 + ... + 72405.

Almost surely, 2^2211768944 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 2211768944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2736574848).

2211768944 is an abundant number, since it is smaller than the sum of its proper divisors (3261380752).

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

2211768944 is a wasteful number, since it uses less digits than its factorization.

2211768944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43854 (or 43848 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 2211768944 is about 47029.4476259290. The cubic root of 2211768944 is about 1302.9065035839.

The spelling of 2211768944 in words is "two billion, two hundred eleven million, seven hundred sixty-eight thousand, nine hundred forty-four".