1628208500 has 24 divisors (see below), whose sum is σ = 3556008456. Its totient is φ = 651283200.

The previous prime is 1628208499. The next prime is 1628208503. The reversal of 1628208500 is 58028261.

It can be written as a sum of positive squares in 4 ways, for example, as 169885156 + 1458323344 = 13034^2 + 38188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628208503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627709 + ... + 1628708.

It is an arithmetic number, because the mean of its divisors is an integer number (148167019).

Almost surely, 2^1628208500 is an apocalyptic number.

1628208500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1628208500 is an abundant number, since it is smaller than the sum of its proper divisors (1927799956).

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

1628208500 is a wasteful number, since it uses less digits than its factorization.

1628208500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256436 (or 3256424 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1628208500 is about 40351.0656612685. The cubic root of 1628208500 is about 1176.4406051427.

The spelling of 1628208500 in words is "one billion, six hundred twenty-eight million, two hundred eight thousand, five hundred".