6478128 has 30 divisors (see below), whose sum is σ = 18130164. Its totient is φ = 2159328.

The previous prime is 6478117. The next prime is 6478187. The reversal of 6478128 is 8218746.

6478128 is a `hidden beast` number, since 647 + 8 + 1 + 2 + 8 = 666.

It is a super-2 number, since 2×6478128² = 83932284768768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6478092 and 6478101.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22350 + ... + 22637.

Almost surely, 2^6478128 is an apocalyptic number.

It is an amenable number.

6478128 is an abundant number, since it is smaller than the sum of its proper divisors (11652036).

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

6478128 is a wasteful number, since it uses less digits than its factorization.

6478128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45001 (or 44992 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 6478128 is about 2545.2166901857. The cubic root of 6478128 is about 186.4159957292.

The spelling of 6478128 in words is "six million, four hundred seventy-eight thousand, one hundred twenty-eight".