Search a number
-
+
80741868 = 223192389173
BaseRepresentation
bin1001101000000…
…00010111101100
312121221010000120
410310000113230
5131132214433
612002324540
72000203014
oct464002754
9177833016
1080741868
1141638619
1223059750
131395cc6c
14aa1ac44
15714d7b3
hex4d005ec

80741868 has 96 divisors (see below), whose sum is σ = 210470400. Its totient is φ = 23975424.

The previous prime is 80741867. The next prime is 80741897. The reversal of 80741868 is 86814708.

It is not an unprimeable number, because it can be changed into a prime (80741861) 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, 466630 + ... + 466802.

It is an arithmetic number, because the mean of its divisors is an integer number (2192400).

Almost surely, 280741868 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 80741868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105235200).

80741868 is an abundant number, since it is smaller than the sum of its proper divisors (129728532).

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

80741868 is a wasteful number, since it uses less digits than its factorization.

80741868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 80741868 is about 8985.6478898296. The cubic root of 80741868 is about 432.2147637569.

The spelling of 80741868 in words is "eighty million, seven hundred forty-one thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 19 23 38 46 57 69 76 89 92 114 138 173 178 228 267 276 346 356 437 519 534 692 874 1038 1068 1311 1691 1748 2047 2076 2622 3287 3382 3979 4094 5073 5244 6141 6574 6764 7958 8188 9861 10146 11937 12282 13148 15397 15916 19722 20292 23874 24564 30794 38893 39444 46191 47748 61588 75601 77786 92382 116679 151202 155572 184764 226803 233358 292543 302404 354131 453606 466716 585086 708262 877629 907212 1062393 1170172 1416524 1755258 2124786 3510516 4249572 6728489 13456978 20185467 26913956 40370934 80741868