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130806612 = 223223239661
BaseRepresentation
bin1111100101111…
…11001101010100
3100010010122221100
413302333031110
5231441302422
620551350100
73145560246
oct762771524
9303118840
10130806612
1167922a42
1237982330
132113b981
1413530096
15b73c7ac
hex7cbf354

130806612 has 72 divisors (see below), whose sum is σ = 346993920. Its totient is φ = 41469120.

The previous prime is 130806607. The next prime is 130806623. The reversal of 130806612 is 216608031.

It is a super-2 number, since 2×1308066122 = 34220739485837088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197562 + ... + 198222.

It is an arithmetic number, because the mean of its divisors is an integer number (4819360).

Almost surely, 2130806612 is an apocalyptic number.

130806612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130806612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173496960).

130806612 is an abundant number, since it is smaller than the sum of its proper divisors (216187308).

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

130806612 is a wasteful number, since it uses less digits than its factorization.

130806612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 130806612 is about 11437.0718280511. The cubic root of 130806612 is about 507.6252687281.

The spelling of 130806612 in words is "one hundred thirty million, eight hundred six thousand, six hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 69 92 138 207 239 276 414 478 661 717 828 956 1322 1434 1983 2151 2644 2868 3966 4302 5497 5949 7932 8604 10994 11898 15203 16491 21988 23796 30406 32982 45609 49473 60812 65964 91218 98946 136827 157979 182436 197892 273654 315958 473937 547308 631916 947874 1421811 1895748 2843622 3633517 5687244 7267034 10900551 14534068 21801102 32701653 43602204 65403306 130806612