6505228420 has 24 divisors (see below), whose sum is σ = 13666325400. Its totient is φ = 2601073152.

The previous prime is 6505228397. The next prime is 6505228421. The reversal of 6505228420 is 248225056.

It can be written as a sum of positive squares in 4 ways, for example, as 580231744 + 5924996676 = 24088^2 + 76974^2 .

It is not an unprimeable number, because it can be changed into a prime (6505228421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10155 + ... + 114514.

It is an arithmetic number, because the mean of its divisors is an integer number (569430225).

Almost surely, 2^6505228420 is an apocalyptic number.

It is an amenable number.

6505228420 is an abundant number, since it is smaller than the sum of its proper divisors (7161096980).

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

6505228420 is a wasteful number, since it uses less digits than its factorization.

6505228420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127287 (or 127285 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 6505228420 is about 80654.9962494575. The cubic root of 6505228420 is about 1866.7558324046.

The spelling of 6505228420 in words is "six billion, five hundred five million, two hundred twenty-eight thousand, four hundred twenty".