6516428 has 6 divisors (see below), whose sum is σ = 11403756. Its totient is φ = 3258212.

The previous prime is 6516421. The next prime is 6516431. The reversal of 6516428 is 8246156.

It is a junction number, because it is equal to n+sod(n) for n = 6516394 and 6516403.

It is not an unprimeable number, because it can be changed into a prime (6516421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814550 + ... + 814557.

It is an arithmetic number, because the mean of its divisors is an integer number (1900626).

Almost surely, 2^6516428 is an apocalyptic number.

It is an amenable number.

6516428 is a deficient number, since it is larger than the sum of its proper divisors (4887328).

6516428 is a wasteful number, since it uses less digits than its factorization.

6516428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629111 (or 1629109 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 6516428 is about 2552.7295195535. The cubic root of 6516428 is about 186.7826504252.

The spelling of 6516428 in words is "six million, five hundred sixteen thousand, four hundred twenty-eight".