6449128 has 16 divisors (see below), whose sum is σ = 13819680. Its totient is φ = 2763888.

The previous prime is 6449123. The next prime is 6449141. The reversal of 6449128 is 8219446.

It is a junction number, because it is equal to n+sod(n) for n = 6449093 and 6449102.

It is not an unprimeable number, because it can be changed into a prime (6449123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57526 + ... + 57637.

It is an arithmetic number, because the mean of its divisors is an integer number (863730).

Almost surely, 2^6449128 is an apocalyptic number.

It is an amenable number.

6449128 is an abundant number, since it is smaller than the sum of its proper divisors (7370552).

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

6449128 is a wasteful number, since it uses less digits than its factorization.

6449128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115176 (or 115172 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 6449128 is about 2539.5133392050. The cubic root of 6449128 is about 186.1374095425.

The spelling of 6449128 in words is "six million, four hundred forty-nine thousand, one hundred twenty-eight".