2215647168 has 112 divisors (see below), whose sum is σ = 6775338240. Its totient is φ = 625895424.

The previous prime is 2215647113. The next prime is 2215647169. The reversal of 2215647168 is 8617465122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215647169) 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, 110355 + ... + 128877.

Almost surely, 2^2215647168 is an apocalyptic number.

2215647168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215647168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3387669120).

2215647168 is an abundant number, since it is smaller than the sum of its proper divisors (4559691072).

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

2215647168 is a wasteful number, since it uses less digits than its factorization.

2215647168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18634 (or 18624 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 2215647168 is about 47070.6614357606. The cubic root of 2215647168 is about 1303.6675856111.

The spelling of 2215647168 in words is "two billion, two hundred fifteen million, six hundred forty-seven thousand, one hundred sixty-eight".