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630800000 = 27551983
BaseRepresentation
bin100101100110010…
…011111010000000
31121221221221220222
4211212103322000
52242441100000
6142332122212
721426466025
oct4546237200
91557857828
10630800000
112a4085416
12157306368
13a08c0a4c
145dac354c
153a5a3a85
hex25993e80

630800000 has 192 divisors, whose sum is σ = 1673330400. Its totient is φ = 236160000.

The previous prime is 630799999. The next prime is 630800003. The reversal of 630800000 is 8036.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630800003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7599959 + ... + 7600041.

Almost surely, 2630800000 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 630800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836665200).

630800000 is an abundant number, since it is smaller than the sum of its proper divisors (1042530400).

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

630800000 is an frugal number, since it uses more digits than its factorization.

630800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 630800000 is about 25115.7321215210. The cubic root of 630800000 is about 857.6245969221.

Adding to 630800000 its reverse (8036), we get a palindrome (630808036).

The spelling of 630800000 in words is "six hundred thirty million, eight hundred thousand".