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103145680 = 245111931199
BaseRepresentation
bin1100010010111…
…10000011010000
321012002100021101
412021132003100
5202401130210
614122434144
72361503161
oct611360320
9235070241
10103145680
115324a970
122a662954
13184a5561
14d9ad768
1590c6a3a
hex625e0d0

103145680 has 160 divisors (see below), whose sum is σ = 285696000. Its totient is φ = 34214400.

The previous prime is 103145671. The next prime is 103145687. The reversal of 103145680 is 86541301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103145687) 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 31 ways as a sum of consecutive naturals, for example, 518221 + ... + 518419.

It is an arithmetic number, because the mean of its divisors is an integer number (1785600).

Almost surely, 2103145680 is an apocalyptic number.

103145680 is a gapful number since it is divisible by the number (10) 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 103145680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142848000).

103145680 is an abundant number, since it is smaller than the sum of its proper divisors (182550320).

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

103145680 is a wasteful number, since it uses less digits than its factorization.

103145680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 103145680 is about 10156.0661675670. The cubic root of 103145680 is about 468.9757080721.

Adding to 103145680 its reverse (86541301), we get a palindrome (189686981).

The spelling of 103145680 in words is "one hundred three million, one hundred forty-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 19 20 22 31 38 40 44 55 62 76 80 88 95 110 124 152 155 176 190 199 209 220 248 304 310 341 380 398 418 440 496 589 620 682 760 796 836 880 995 1045 1178 1240 1364 1520 1592 1672 1705 1990 2090 2189 2356 2480 2728 2945 3184 3344 3410 3781 3980 4180 4378 4712 5456 5890 6169 6479 6820 7562 7960 8360 8756 9424 10945 11780 12338 12958 13640 15124 15920 16720 17512 18905 21890 23560 24676 25916 27280 30248 30845 32395 35024 37810 41591 43780 47120 49352 51832 60496 61690 64790 67859 75620 83182 87560 98704 103664 117211 123380 129580 135718 151240 166364 175120 207955 234422 246760 259160 271436 302480 332728 339295 415910 468844 493520 518320 542872 586055 665456 678590 831820 937688 1085744 1172110 1289321 1357180 1663640 1875376 2344220 2578642 2714360 3327280 4688440 5157284 5428720 6446605 9376880 10314568 12893210 20629136 25786420 51572840 103145680