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78101296 = 2472137997
BaseRepresentation
bin1001010011110…
…11101100110000
312102221221211121
410221323230300
5124443220141
611425552024
71635564400
oct451735460
9172857747
1078101296
11400a4729
12221a5614
13132470b0
14a530800
156ccb1d1
hex4a7bb30

78101296 has 120 divisors (see below), whose sum is σ = 193945920. Its totient is φ = 30191616.

The previous prime is 78101293. The next prime is 78101299. The reversal of 78101296 is 69210187.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78101293) and next prime (78101299).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78101291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 805120 + ... + 805216.

It is an arithmetic number, because the mean of its divisors is an integer number (1616216).

Almost surely, 278101296 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 78101296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96972960).

78101296 is an abundant number, since it is smaller than the sum of its proper divisors (115844624).

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

78101296 is a wasteful number, since it uses less digits than its factorization.

78101296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 78101296 is about 8837.4937623740. The cubic root of 78101296 is about 427.4507468079.

The spelling of 78101296 in words is "seventy-eight million, one hundred one thousand, two hundred ninety-six".

Divisors: 1 2 4 7 8 13 14 16 26 28 49 52 56 79 91 97 98 104 112 158 182 194 196 208 316 364 388 392 553 632 637 679 728 776 784 1027 1106 1261 1264 1274 1358 1456 1552 2054 2212 2522 2548 2716 3871 4108 4424 4753 5044 5096 5432 7189 7663 7742 8216 8827 8848 9506 10088 10192 10864 14378 15326 15484 16432 17654 19012 20176 28756 30652 30968 35308 38024 50323 53641 57512 61304 61789 61936 70616 76048 99619 100646 107282 115024 122608 123578 141232 199238 201292 214564 247156 375487 398476 402584 429128 494312 697333 750974 796952 805168 858256 988624 1394666 1501948 1593904 2789332 3003896 4881331 5578664 6007792 9762662 11157328 19525324 39050648 78101296