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680037912 = 233253178207
BaseRepresentation
bin101000100010001…
…000111000011000
31202101121111122100
4220202020320120
52343042203122
6151251323400
722565140551
oct5042107030
91671544570
10680037912
11319955604
1216b8b0560
13aab702c8
146645d328
153ea7caac
hex28888e18

680037912 has 48 divisors (see below), whose sum is σ = 1876530240. Its totient is φ = 222401088.

The previous prime is 680037881. The next prime is 680037923. The reversal of 680037912 is 219730086.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85288 + ... + 92919.

It is an arithmetic number, because the mean of its divisors is an integer number (39094380).

Almost surely, 2680037912 is an apocalyptic number.

It is an amenable number.

680037912 is an abundant number, since it is smaller than the sum of its proper divisors (1196492328).

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

680037912 is a wasteful number, since it uses less digits than its factorization.

680037912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178272 (or 178265 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 680037912 is about 26077.5365400952. The cubic root of 680037912 is about 879.3822765403.

Adding to 680037912 its reverse (219730086), we get a palindrome (899767998).

The spelling of 680037912 in words is "six hundred eighty million, thirty-seven thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 53 72 106 159 212 318 424 477 636 954 1272 1908 3816 178207 356414 534621 712828 1069242 1425656 1603863 2138484 3207726 4276968 6415452 9444971 12830904 18889942 28334913 37779884 56669826 75559768 85004739 113339652 170009478 226679304 340018956 680037912