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272272680 = 233251722617
BaseRepresentation
bin10000001110101…
…000110100101000
3200222022212220100
4100032220310220
51024200211210
643003425400
76514164621
oct2016506450
9628285810
10272272680
1112a766549
1277225260
13445403c4
1428236a48
1518d835c0
hex103a8d28

272272680 has 144 divisors (see below), whose sum is σ = 940359420. Its totient is φ = 68308992.

The previous prime is 272272639. The next prime is 272272687. The reversal of 272272680 is 86272272.

It can be written as a sum of positive squares in 6 ways, for example, as 256064004 + 16208676 = 16002^2 + 4026^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (272272687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 102732 + ... + 105348.

Almost surely, 2272272680 is an apocalyptic number.

272272680 is a gapful number since it is divisible by the number (20) 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 272272680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470179710).

272272680 is an abundant number, since it is smaller than the sum of its proper divisors (668086740).

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

272272680 is a wasteful number, since it uses less digits than its factorization.

272272680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 272272680 is about 16500.6872584144. The cubic root of 272272680 is about 648.1388019994.

The spelling of 272272680 in words is "two hundred seventy-two million, two hundred seventy-two thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 30 34 36 40 45 51 60 68 72 85 90 102 120 136 153 170 180 204 255 289 306 340 360 408 510 578 612 680 765 867 1020 1156 1224 1445 1530 1734 2040 2312 2601 2617 2890 3060 3468 4335 5202 5234 5780 6120 6936 7851 8670 10404 10468 11560 13005 13085 15702 17340 20808 20936 23553 26010 26170 31404 34680 39255 44489 47106 52020 52340 62808 78510 88978 94212 104040 104680 117765 133467 157020 177956 188424 222445 235530 266934 314040 355912 400401 444890 471060 533868 667335 756313 800802 889780 942120 1067736 1334670 1512626 1601604 1779560 2002005 2268939 2669340 3025252 3203208 3781565 4004010 4537878 5338680 6050504 6806817 7563130 8008020 9075756 11344695 13613634 15126260 16016040 18151512 22689390 27227268 30252520 34034085 45378780 54454536 68068170 90757560 136136340 272272680