6780128 has 12 divisors (see below), whose sum is σ = 13348440. Its totient is φ = 3390048.

The previous prime is 6780119. The next prime is 6780133. The reversal of 6780128 is 8210876.

6780128 is nontrivially palindromic in base 15.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 211879 = 6780128 / (6 + 7 + 8 + 0 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 6780094 and 6780103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105908 + ... + 105971.

It is an arithmetic number, because the mean of its divisors is an integer number (1112370).

Almost surely, 2^6780128 is an apocalyptic number.

It is an amenable number.

6780128 is a deficient number, since it is larger than the sum of its proper divisors (6568312).

6780128 is a wasteful number, since it uses less digits than its factorization.

6780128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211889 (or 211881 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 6780128 is about 2603.8678921942. The cubic root of 6780128 is about 189.2689172299.

The spelling of 6780128 in words is "six million, seven hundred eighty thousand, one hundred twenty-eight".