6402259128 has 32 divisors (see below), whose sum is σ = 16521960960. Its totient is φ = 2065244640.

The previous prime is 6402259091. The next prime is 6402259151. The reversal of 6402259128 is 8219522046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4301850 + ... + 4303337.

It is an arithmetic number, because the mean of its divisors is an integer number (516311280).

Almost surely, 2^6402259128 is an apocalyptic number.

It is an amenable number.

6402259128 is an abundant number, since it is smaller than the sum of its proper divisors (10119701832).

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

6402259128 is a wasteful number, since it uses less digits than its factorization.

6402259128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8605227 (or 8605223 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 6402259128 is about 80014.1183042093. The cubic root of 6402259128 is about 1856.8539648979.

The spelling of 6402259128 in words is "six billion, four hundred two million, two hundred fifty-nine thousand, one hundred twenty-eight".