3218022648 has 128 divisors (see below), whose sum is σ = 9192268800. Its totient is φ = 1042530048.

The previous prime is 3218022629. The next prime is 3218022707. The reversal of 3218022648 is 8462208123.

3218022648 is a `hidden beast` number, since 3 + 2 + 1 + 8 + 0 + 2 + 2 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2163361 + ... + 2164847.

It is an arithmetic number, because the mean of its divisors is an integer number (71814600).

Almost surely, 2^3218022648 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 3218022648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4596134400).

3218022648 is an abundant number, since it is smaller than the sum of its proper divisors (5974246152).

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

3218022648 is a wasteful number, since it uses less digits than its factorization.

3218022648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 3218022648 is about 56727.6180356623. The cubic root of 3218022648 is about 1476.3739220535.

The spelling of 3218022648 in words is "three billion, two hundred eighteen million, twenty-two thousand, six hundred forty-eight".