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7115385768 = 2331726531571
BaseRepresentation
bin1101010000001110…
…00010101110101000
3200100212212001022020
412220013002232220
5104033014321033
63134015224440
7341216531631
oct65007025650
920325761266
107115385768
1130214a4707
121466b18120
138951a584a
144b6dd4888
152b9a0c6b3
hex1a81c2ba8

7115385768 has 96 divisors (see below), whose sum is σ = 18937380960. Its totient is φ = 2227440640.

The previous prime is 7115385743. The next prime is 7115385779. The reversal of 7115385768 is 8675835117.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 7115385768.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4528423 + ... + 4529993.

It is an arithmetic number, because the mean of its divisors is an integer number (197264385).

Almost surely, 27115385768 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 7115385768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9468690480).

7115385768 is an abundant number, since it is smaller than the sum of its proper divisors (11821995192).

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

7115385768 is a wasteful number, since it uses less digits than its factorization.

7115385768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2246 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 51.

The square root of 7115385768 is about 84352.7460608130. The cubic root of 7115385768 is about 1923.3846700228.

The spelling of 7115385768 in words is "seven billion, one hundred fifteen million, three hundred eighty-five thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 289 408 578 653 867 1156 1306 1571 1734 1959 2312 2612 3142 3468 3918 4713 5224 6284 6936 7836 9426 11101 12568 15672 18852 22202 26707 33303 37704 44404 53414 66606 80121 88808 106828 133212 160242 188717 213656 266424 320484 377434 454019 566151 640968 754868 908038 1025863 1132302 1362057 1509736 1816076 2051726 2264604 2724114 3077589 3632152 4103452 4529208 5448228 6155178 8206904 10896456 12310356 17439671 24620712 34879342 52319013 69758684 104638026 139517368 209276052 296474407 418552104 592948814 889423221 1185897628 1778846442 2371795256 3557692884 7115385768