1606728628 has 12 divisors (see below), whose sum is σ = 2815132320. Its totient is φ = 802405112.

The previous prime is 1606728611. The next prime is 1606728631. The reversal of 1606728628 is 8268276061.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236026 + ... + 242737.

It is an arithmetic number, because the mean of its divisors is an integer number (234594360).

Almost surely, 2^1606728628 is an apocalyptic number.

It is an amenable number.

1606728628 is a deficient number, since it is larger than the sum of its proper divisors (1208403692).

1606728628 is a wasteful number, since it uses less digits than its factorization.

1606728628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479606 (or 479604 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1606728628 is about 40084.0196088167. The cubic root of 1606728628 is about 1171.2443546216.

The spelling of 1606728628 in words is "one billion, six hundred six million, seven hundred twenty-eight thousand, six hundred twenty-eight".