6450215328 has 384 divisors, whose sum is σ = 20353213440. Its totient is φ = 2008820736.

The previous prime is 6450215311. The next prime is 6450215329. The reversal of 6450215328 is 8235120546.

6450215328 is a `hidden beast` number, since 645 + 0 + 2 + 1 + 5 + 3 + 2 + 8 = 666.

It is a super-2 number, since 2×6450215328² = 83210555555132295168, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 6450215292 and 6450215301.

It is not an unprimeable number, because it can be changed into a prime (6450215329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 121702150 + ... + 121702202.

It is an arithmetic number, because the mean of its divisors is an integer number (53003160).

Almost surely, 2^6450215328 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 6450215328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10176606720).

6450215328 is an abundant number, since it is smaller than the sum of its proper divisors (13902998112).

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

6450215328 is an equidigital number, since it uses as much as digits as its factorization.

6450215328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 6450215328 is about 80313.2325834292. The cubic root of 6450215328 is about 1861.4786992532.

The spelling of 6450215328 in words is "six billion, four hundred fifty million, two hundred fifteen thousand, three hundred twenty-eight".