1628005656 has 16 divisors (see below), whose sum is σ = 4070014200. Its totient is φ = 542668544.

The previous prime is 1628005627. The next prime is 1628005681. The reversal of 1628005656 is 6565008261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33916761 + ... + 33916808.

Almost surely, 2^1628005656 is an apocalyptic number.

It is an amenable number.

1628005656 is an abundant number, since it is smaller than the sum of its proper divisors (2442008544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1628005656 is a wasteful number, since it uses less digits than its factorization.

1628005656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67833578 (or 67833574 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 1628005656 is about 40348.5520929810. The cubic root of 1628005656 is about 1176.3917490270.

The spelling of 1628005656 in words is "one billion, six hundred twenty-eight million, five thousand, six hundred fifty-six".