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78080912 = 24721347163
BaseRepresentation
bin1001010011101…
…10101110010000
312102220220212122
410221312232100
5124442042122
611425313412
71635451100
oct451665620
9172826778
1078080912
1140090388
1222195868
131323aa30
14a527200
156cc5142
hex4a76b90

78080912 has 120 divisors (see below), whose sum is σ = 194737536. Its totient is φ = 30046464.

The previous prime is 78080897. The next prime is 78080921. The reversal of 78080912 is 21908087.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 478943 + ... + 479105.

Almost surely, 278080912 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 78080912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97368768).

78080912 is an abundant number, since it is smaller than the sum of its proper divisors (116656624).

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

78080912 is a wasteful number, since it uses less digits than its factorization.

78080912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 78080912 is about 8836.3404189744. The cubic root of 78080912 is about 427.4135561567.

Adding to 78080912 its reverse (21908087), we get a palindrome (99988999).

The spelling of 78080912 in words is "seventy-eight million, eighty thousand, nine hundred twelve".

Divisors: 1 2 4 7 8 13 14 16 26 28 47 49 52 56 91 94 98 104 112 163 182 188 196 208 326 329 364 376 392 611 637 652 658 728 752 784 1141 1222 1274 1304 1316 1456 2119 2282 2303 2444 2548 2608 2632 4238 4277 4564 4606 4888 5096 5264 7661 7987 8476 8554 9128 9212 9776 10192 14833 15322 15974 16952 17108 18256 18424 29666 29939 30644 31948 33904 34216 36848 53627 59332 59878 61288 63896 68432 99593 103831 107254 118664 119756 122576 127792 199186 207662 214508 237328 239512 375389 398372 415324 429016 479024 697151 750778 796744 830648 858032 1394302 1501556 1593488 1661296 2788604 3003112 4880057 5577208 6006224 9760114 11154416 19520228 39040456 78080912