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80331272 = 23723471327
BaseRepresentation
bin1001100100111…
…00001000001000
312121011020210022
410302130020020
5131031100042
611545440012
71663542650
oct462341010
9177136708
1080331272
114138808a
1222aa0008
13138480c8
14a951360
1570bbcd2
hex4c9c208

80331272 has 64 divisors (see below), whose sum is σ = 183582720. Its totient is φ = 32205888.

The previous prime is 80331269. The next prime is 80331283. The reversal of 80331272 is 27213308.

It is a super-2 number, since 2×803312722 = 12906226522275968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59873 + ... + 61199.

It is an arithmetic number, because the mean of its divisors is an integer number (2868480).

Almost surely, 280331272 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 80331272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91791360).

80331272 is an abundant number, since it is smaller than the sum of its proper divisors (103251448).

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

80331272 is a wasteful number, since it uses less digits than its factorization.

80331272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 80331272 is about 8962.7714463775. The cubic root of 80331272 is about 431.4808721924.

The spelling of 80331272 in words is "eighty million, three hundred thirty-one thousand, two hundred seventy-two".

Divisors: 1 2 4 7 8 14 23 28 46 47 56 92 94 161 184 188 322 329 376 644 658 1081 1288 1316 1327 2162 2632 2654 4324 5308 7567 8648 9289 10616 15134 18578 30268 30521 37156 60536 61042 62369 74312 122084 124738 213647 244168 249476 427294 436583 498952 854588 873166 1434487 1709176 1746332 2868974 3492664 5737948 10041409 11475896 20082818 40165636 80331272