6420305000 has 80 divisors (see below), whose sum is σ = 15927854580. Its totient is φ = 2417024000.

The previous prime is 6420304993. The next prime is 6420305069. The reversal of 6420305000 is 5030246.

It can be written as a sum of positive squares in 10 ways, for example, as 16144324 + 6404160676 = 4018^2 + 80026^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47234 + ... + 122766.

Almost surely, 2^6420305000 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 6420305000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7963927290).

6420305000 is an abundant number, since it is smaller than the sum of its proper divisors (9507549580).

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

6420305000 is a wasteful number, since it uses less digits than its factorization.

6420305000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75576 (or 75557 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 6420305000 is about 80126.8057518831. The cubic root of 6420305000 is about 1858.5969493821.

Adding to 6420305000 its reverse (5030246), we get a palindrome (6425335246).

The spelling of 6420305000 in words is "six billion, four hundred twenty million, three hundred five thousand".