6389657628 has 48 divisors (see below), whose sum is σ = 15765550080. Its totient is φ = 2010902400.

The previous prime is 6389657513. The next prime is 6389657629. The reversal of 6389657628 is 8267569836.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389657629) 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 15 ways as a sum of consecutive naturals, for example, 194218 + ... + 224721.

It is an arithmetic number, because the mean of its divisors is an integer number (328448960).

Almost surely, 2^6389657628 is an apocalyptic number.

It is an amenable number.

6389657628 is an abundant number, since it is smaller than the sum of its proper divisors (9375892452).

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

6389657628 is a wasteful number, since it uses less digits than its factorization.

6389657628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419018 (or 419016 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The square root of 6389657628 is about 79935.3340394597. The cubic root of 6389657628 is about 1855.6348892728.

The spelling of 6389657628 in words is "six billion, three hundred eighty-nine million, six hundred fifty-seven thousand, six hundred twenty-eight".