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67256080 = 2451722909
BaseRepresentation
bin1000000001000…
…11111100010000
311200112221222221
410000203330100
5114204143310
610401310424
71444444603
oct400437420
9150487887
1067256080
1134a67541
121a635414
1310c1a8c8
148d0a33a
155d87ada
hex4023f10

67256080 has 60 divisors (see below), whose sum is σ = 166166820. Its totient is φ = 25311232.

The previous prime is 67256051. The next prime is 67256083. The reversal of 67256080 is 8065276.

It can be written as a sum of positive squares in 6 ways, for example, as 11723776 + 55532304 = 3424^2 + 7452^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (67256083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21666 + ... + 24574.

It is an arithmetic number, because the mean of its divisors is an integer number (2769447).

Almost surely, 267256080 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 67256080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83083410).

67256080 is an abundant number, since it is smaller than the sum of its proper divisors (98910740).

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

67256080 is a wasteful number, since it uses less digits than its factorization.

67256080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 2933 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 67256080 is about 8200.9804291926. The cubic root of 67256080 is about 406.6716055419.

The spelling of 67256080 in words is "sixty-seven million, two hundred fifty-six thousand, eighty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 289 340 578 680 1156 1360 1445 2312 2890 2909 4624 5780 5818 11560 11636 14545 23120 23272 29090 46544 49453 58180 98906 116360 197812 232720 247265 395624 494530 791248 840701 989060 1681402 1978120 3362804 3956240 4203505 6725608 8407010 13451216 16814020 33628040 67256080