3216003216 has 80 divisors (see below), whose sum is σ = 8516353728. Its totient is φ = 1045440000.

The previous prime is 3216003181. The next prime is 3216003257. The reversal of 3216003216 is 6123006123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 319866 + ... + 329766.

Almost surely, 2^3216003216 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 3216003216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4258176864).

3216003216 is an abundant number, since it is smaller than the sum of its proper divisors (5300350512).

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

3216003216 is a wasteful number, since it uses less digits than its factorization.

3216003216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10080 (or 10074 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 3216003216 is about 56709.8158699180. The cubic root of 3216003216 is about 1476.0650304410.

Adding to 3216003216 its reverse (6123006123), we get a palindrome (9339009339).

It can be divided in two parts, 321600 and 3216, that multiplied together give a square (1034265600 = 32160²).

The spelling of 3216003216 in words is "three billion, two hundred sixteen million, three thousand, two hundred sixteen".