1628216 has 16 divisors (see below), whose sum is σ = 3186000. Its totient is φ = 778624.

The previous prime is 1628203. The next prime is 1628227. The reversal of 1628216 is 6128261.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4241 + ... + 4608.

It is an arithmetic number, because the mean of its divisors is an integer number (199125).

2^1628216 is an apocalyptic number.

It is an amenable number.

1628216 is a deficient number, since it is larger than the sum of its proper divisors (1557784).

1628216 is a wasteful number, since it uses less digits than its factorization.

1628216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8878 (or 8874 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1628216 is about 1276.0156738849. The cubic root of 1628216 is about 117.6442411482.

The spelling of 1628216 in words is "one million, six hundred twenty-eight thousand, two hundred sixteen".