1722162216 has 64 divisors (see below), whose sum is σ = 4464979200. Its totient is φ = 552876800.

The previous prime is 1722162173. The next prime is 1722162227. The reversal of 1722162216 is 6122612271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297106 + ... + 302846.

It is an arithmetic number, because the mean of its divisors is an integer number (69765300).

Almost surely, 2^1722162216 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 1722162216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2232489600).

1722162216 is an abundant number, since it is smaller than the sum of its proper divisors (2742816984).

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

1722162216 is a wasteful number, since it uses less digits than its factorization.

1722162216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210 (or 6206 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 1722162216 is about 41498.9423479683. The cubic root of 1722162216 is about 1198.6471364845.

Adding to 1722162216 its reverse (6122612271), we get a palindrome (7844774487).

The spelling of 1722162216 in words is "one billion, seven hundred twenty-two million, one hundred sixty-two thousand, two hundred sixteen".