1630208 has 28 divisors (see below), whose sum is σ = 3276600. Its totient is φ = 811008.

The previous prime is 1630199. The next prime is 1630243. The reversal of 1630208 is 8020361.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1630208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8093 + ... + 8291.

2^1630208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638300).

1630208 is an abundant number, since it is smaller than the sum of its proper divisors (1646392).

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

1630208 is an frugal number, since it uses more digits than its factorization.

1630208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1630208 is about 1276.7959899686. The cubic root of 1630208 is about 117.6921978944.

Adding to 1630208 its reverse (8020361), we get a palindrome (9650569).

The spelling of 1630208 in words is "one million, six hundred thirty thousand, two hundred eight".