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68293120 = 295737103
BaseRepresentation
bin1000001001000…
…01001000000000
311202111122112211
410010201020000
5114440334440
610435431504
71456324210
oct404411000
9152448484
1068293120
11356056a5
121aa55594
13111c193c
1490da240
155edeeea
hex4121200

68293120 has 160 divisors (see below), whose sum is σ = 194059008. Its totient is φ = 22560768.

The previous prime is 68293111. The next prime is 68293129. The reversal of 68293120 is 2139286.

It is an interprime number because it is at equal distance from previous prime (68293111) and next prime (68293129).

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68293129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662989 + ... + 663091.

Almost surely, 268293120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68293120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97029504).

68293120 is an abundant number, since it is smaller than the sum of its proper divisors (125765888).

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

68293120 is a wasteful number, since it uses less digits than its factorization.

68293120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 68293120 is about 8263.9651499749. The cubic root of 68293120 is about 408.7511473313.

The spelling of 68293120 in words is "sixty-eight million, two hundred ninety-three thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 56 64 70 74 80 103 112 128 140 148 160 185 206 224 256 259 280 296 320 370 412 448 512 515 518 560 592 640 721 740 824 896 1030 1036 1120 1184 1280 1295 1442 1480 1648 1792 2060 2072 2240 2368 2560 2590 2884 2960 3296 3584 3605 3811 4120 4144 4480 4736 5180 5768 5920 6592 7210 7622 8240 8288 8960 9472 10360 11536 11840 13184 14420 15244 16480 16576 17920 18944 19055 20720 23072 23680 26368 26677 28840 30488 32960 33152 38110 41440 46144 47360 52736 53354 57680 60976 65920 66304 76220 82880 92288 94720 106708 115360 121952 131840 132608 133385 152440 165760 184576 213416 230720 243904 263680 266770 304880 331520 369152 426832 461440 487808 533540 609760 663040 853664 922880 975616 1067080 1219520 1707328 1845760 1951232 2134160 2439040 3414656 4268320 4878080 6829312 8536640 9756160 13658624 17073280 34146560 68293120