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3120130020 = 2235717436993
BaseRepresentation
bin1011100111111001…
…0110011111100100
322001110002000202010
42321332112133210
522342223130040
61233335114220
7140214444660
oct27176263744
98043060663
103120130020
111361260957
12730b12970
133a95556a7
142185578a0
15133dc2e80
hexb9f967e4

3120130020 has 96 divisors (see below), whose sum is σ = 10571758848. Its totient is φ = 671219712.

The previous prime is 3120129997. The next prime is 3120130093. The reversal of 3120130020 is 200310213.

It is a happy number.

It is a super-2 number, since 2×31201300202 = 19470422683410400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 3120129978 and 3120130005.

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, 211357 + ... + 225636.

It is an arithmetic number, because the mean of its divisors is an integer number (110122488).

Almost surely, 23120130020 is an apocalyptic number.

3120130020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3120130020 is an abundant number, since it is smaller than the sum of its proper divisors (7451628828).

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

3120130020 is a wasteful number, since it uses less digits than its factorization.

3120130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437029 (or 437027 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3120130020 is about 55858.1240286496. The cubic root of 3120130020 is about 1461.2490124962.

Adding to 3120130020 its reverse (200310213), we get a palindrome (3320440233).

The spelling of 3120130020 in words is "three billion, one hundred twenty million, one hundred thirty thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 17 20 21 28 30 34 35 42 51 60 68 70 84 85 102 105 119 140 170 204 210 238 255 340 357 420 476 510 595 714 1020 1190 1428 1785 2380 3570 7140 436993 873986 1310979 1747972 2184965 2621958 3058951 4369930 5243916 6117902 6554895 7428881 8739860 9176853 12235804 13109790 14857762 15294755 18353706 22286643 26219580 29715524 30589510 36707412 37144405 44573286 45884265 52002167 61179020 74288810 89146572 91768530 104004334 111433215 148577620 156006501 183537060 208008668 222866430 260010835 312013002 445732860 520021670 624026004 780032505 1040043340 1560065010 3120130020