1628105080 has 128 divisors (see below), whose sum is σ = 4405726080. Its totient is φ = 529735680.

The previous prime is 1628105077. The next prime is 1628105081. The reversal of 1628105080 is 805018261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628105081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422844 + ... + 426676.

It is an arithmetic number, because the mean of its divisors is an integer number (34419735).

Almost surely, 2^1628105080 is an apocalyptic number.

1628105080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1628105080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202863040).

1628105080 is an abundant number, since it is smaller than the sum of its proper divisors (2777621000).

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

1628105080 is a wasteful number, since it uses less digits than its factorization.

1628105080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929 (or 3925 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 1628105080 is about 40349.7841382082. The cubic root of 1628105080 is about 1176.4156963624.

The spelling of 1628105080 in words is "one billion, six hundred twenty-eight million, one hundred five thousand, eighty".