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67871360 = 275173613
BaseRepresentation
bin1000000101110…
…10001010000000
311201201020000002
410002322022000
5114333340420
610422415132
71452616454
oct402721200
9151636002
1067871360
1135347837
121a8914a8
13110a498b
14902a664
155e5a075
hex40ba280

67871360 has 64 divisors (see below), whose sum is σ = 163459080. Its totient is φ = 26947584.

The previous prime is 67871351. The next prime is 67871381. The reversal of 67871360 is 6317876.

It can be written as a sum of positive squares in 4 ways, for example, as 47004736 + 20866624 = 6856^2 + 4568^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110414 + ... + 111026.

Almost surely, 267871360 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 67871360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81729540).

67871360 is an abundant number, since it is smaller than the sum of its proper divisors (95587720).

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

67871360 is a wasteful number, since it uses less digits than its factorization.

67871360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 67871360 is about 8238.4076131252. The cubic root of 67871360 is about 407.9079633486.

The spelling of 67871360 in words is "sixty-seven million, eight hundred seventy-one thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 173 320 346 613 640 692 865 1226 1384 1730 2452 2768 3065 3460 4904 5536 6130 6920 9808 11072 12260 13840 19616 22144 24520 27680 39232 49040 55360 78464 98080 106049 110720 196160 212098 392320 424196 530245 848392 1060490 1696784 2120980 3393568 4241960 6787136 8483920 13574272 16967840 33935680 67871360