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630208 = 2643229
BaseRepresentation
bin10011001110111000000
31012000111001
42121313000
5130131313
621301344
75233225
oct2316700
91160431
10630208
113a0537
12264854
13190b07
1412594c
15c6add
hex99dc0

630208 has 28 divisors (see below), whose sum is σ = 1285240. Its totient is φ = 306432.

The previous prime is 630197. The next prime is 630229. The reversal of 630208 is 802036.

It is a congruent number.

It is an unprimeable number.

630208 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638 + ... + 2866.

2630208 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 630208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642620).

630208 is an abundant number, since it is smaller than the sum of its proper divisors (655032).

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

630208 is a wasteful number, since it uses less digits than its factorization.

630208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 630208 is about 793.8564101902. The cubic root of 630208 is about 85.7356222016.

It can be divided in two parts, 630 and 208, that added together give a palindrome (838).

The spelling of 630208 in words is "six hundred thirty thousand, two hundred eight".

Divisors: 1 2 4 8 16 32 43 64 86 172 229 344 458 688 916 1376 1832 2752 3664 7328 9847 14656 19694 39388 78776 157552 315104 630208