6400570280 has 256 divisors, whose sum is σ = 17146080000. Its totient is φ = 2128896000.

The previous prime is 6400570271. The next prime is 6400570289. The reversal of 6400570280 is 820750046.

It is an interprime number because it is at equal distance from previous prime (6400570271) and next prime (6400570289).

It is not an unprimeable number, because it can be changed into a prime (6400570289) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 25500155 + ... + 25500405.

It is an arithmetic number, because the mean of its divisors is an integer number (66976875).

Almost surely, 2^6400570280 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 6400570280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8573040000).

6400570280 is an abundant number, since it is smaller than the sum of its proper divisors (10745509720).

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

6400570280 is a wasteful number, since it uses less digits than its factorization.

6400570280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 6400570280 is about 80003.5641706043. The cubic root of 6400570280 is about 1856.6906777506.

The spelling of 6400570280 in words is "six billion, four hundred million, five hundred seventy thousand, two hundred eighty".