1628260 has 24 divisors (see below), whose sum is σ = 3621240. Its totient is φ = 612864.

The previous prime is 1628227. The next prime is 1628261. The reversal of 1628260 is 628261.

It can be written as a sum of positive squares in 4 ways, for example, as 70756 + 1557504 = 266^2 + 1248^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1628261) 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, 2055 + ... + 2734.

It is an arithmetic number, because the mean of its divisors is an integer number (150885).

2^1628260 is an apocalyptic number.

1628260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1628260 is an abundant number, since it is smaller than the sum of its proper divisors (1992980).

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

1628260 is a wasteful number, since it uses less digits than its factorization.

1628260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815 (or 4813 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1628260 is about 1276.0329149360. The cubic root of 1628260 is about 117.6453008561.

Subtracting from 1628260 its reverse (628261), we obtain a palindrome (999999).

The spelling of 1628260 in words is "one million, six hundred twenty-eight thousand, two hundred sixty".