6512728 has 16 divisors (see below), whose sum is σ = 12605760. Its totient is φ = 3151200.

The previous prime is 6512719. The next prime is 6512729. The reversal of 6512728 is 8272156.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 6512728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6512729) 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, 12883 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (787860).

Almost surely, 2^6512728 is an apocalyptic number.

It is an amenable number.

6512728 is a deficient number, since it is larger than the sum of its proper divisors (6093032).

6512728 is a wasteful number, since it uses less digits than its factorization.

6512728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26298 (or 26294 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 6512728 is about 2552.0047021900. The cubic root of 6512728 is about 186.7472922685.

The spelling of 6512728 in words is "six million, five hundred twelve thousand, seven hundred twenty-eight".