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67968160 = 2551341797
BaseRepresentation
bin1000000110100…
…01110010100000
311201220010210021
410003101302200
5114344440120
610424443224
71453501621
oct403216240
9151803707
1067968160
1135403537
121a919514
1311109a60
149053a48
155e78aaa
hex40d1ca0

67968160 has 96 divisors (see below), whose sum is σ = 177366672. Its totient is φ = 24453120.

The previous prime is 67968139. The next prime is 67968163. The reversal of 67968160 is 6186976.

It can be written as a sum of positive squares in 8 ways, for example, as 3519376 + 64448784 = 1876^2 + 8028^2 .

It is not an unprimeable number, because it can be changed into a prime (67968163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84882 + ... + 85678.

Almost surely, 267968160 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 67968160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88683336).

67968160 is an abundant number, since it is smaller than the sum of its proper divisors (109398512).

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

67968160 is a wasteful number, since it uses less digits than its factorization.

67968160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 67968160 is about 8244.2804416153. The cubic root of 67968160 is about 408.1017944135.

The spelling of 67968160 in words is "sixty-seven million, nine hundred sixty-eight thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 13 16 20 26 32 40 41 52 65 80 82 104 130 160 164 205 208 260 328 410 416 520 533 656 797 820 1040 1066 1312 1594 1640 2080 2132 2665 3188 3280 3985 4264 5330 6376 6560 7970 8528 10361 10660 12752 15940 17056 20722 21320 25504 31880 32677 41444 42640 51805 63760 65354 82888 85280 103610 127520 130708 163385 165776 207220 261416 326770 331552 414440 424801 522832 653540 828880 849602 1045664 1307080 1657760 1699204 2124005 2614160 3398408 4248010 5228320 6796816 8496020 13593632 16992040 33984080 67968160