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648830130 = 2351310915263
BaseRepresentation
bin100110101011000…
…101110010110010
31200012212222121120
4212223011302302
52312100031010
6144214403110
722035652014
oct4653056262
91605788546
10648830130
1130327a753
12161360496
13a4564670
14622581b4
153be65e70
hex26ac5cb2

648830130 has 64 divisors (see below), whose sum is σ = 1692472320. Its totient is φ = 158236416.

The previous prime is 648830129. The next prime is 648830141. The reversal of 648830130 is 31038846.

648830130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 648830091 and 648830100.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34879 + ... + 50141.

It is an arithmetic number, because the mean of its divisors is an integer number (26444880).

Almost surely, 2648830130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648830130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846236160).

648830130 is an abundant number, since it is smaller than the sum of its proper divisors (1043642190).

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

648830130 is a wasteful number, since it uses less digits than its factorization.

648830130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15395.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 648830130 is about 25472.1441971421. The cubic root of 648830130 is about 865.7191075381.

Adding to 648830130 its reverse (31038846), we get a palindrome (679868976).

The spelling of 648830130 in words is "six hundred forty-eight million, eight hundred thirty thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 109 130 195 218 327 390 545 654 1090 1417 1635 2834 3270 4251 7085 8502 14170 15263 21255 30526 42510 45789 76315 91578 152630 198419 228945 396838 457890 595257 992095 1190514 1663667 1984190 2976285 3327334 4991001 5952570 8318335 9982002 16636670 21627671 24955005 43255342 49910010 64883013 108138355 129766026 216276710 324415065 648830130