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80958930 = 235131712211
BaseRepresentation
bin1001101001101…
…01010111010010
312122100010202220
410310311113102
5131211141210
612011121510
72002065603
oct464652722
9178303686
1080958930
1141776708
1223143296
1313a079c0
14aa75daa
157192c70
hex4d355d2

80958930 has 64 divisors (see below), whose sum is σ = 221574528. Its totient is φ = 18754560.

The previous prime is 80958929. The next prime is 80958937. The reversal of 80958930 is 3985908.

It is not an unprimeable number, because it can be changed into a prime (80958937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525 + ... + 12735.

It is an arithmetic number, because the mean of its divisors is an integer number (3462102).

Almost surely, 280958930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80958930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110787264).

80958930 is an abundant number, since it is smaller than the sum of its proper divisors (140615598).

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

80958930 is a wasteful number, since it uses less digits than its factorization.

80958930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12251.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 80958930 is about 8997.7180440376. The cubic root of 80958930 is about 432.6017313344.

The spelling of 80958930 in words is "eighty million, nine hundred fifty-eight thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 17 26 30 34 39 51 65 78 85 102 130 170 195 221 255 390 442 510 663 1105 1326 2210 3315 6630 12211 24422 36633 61055 73266 122110 158743 183165 207587 317486 366330 415174 476229 622761 793715 952458 1037935 1245522 1587430 2075870 2381145 2698631 3113805 4762290 5397262 6227610 8095893 13493155 16191786 26986310 40479465 80958930