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7680929880 = 23351347104759
BaseRepresentation
bin1110010011101000…
…11011000001011000
3201211022000122222110
413021310123001120
5111212304224010
63310100552320
7361224553401
oct71164330130
921738018873
107680929880
113291759338
1215a43b26a0
139553c9230
1452c16c9a8
152ee4c1120
hex1c9d1b058

7680929880 has 128 divisors (see below), whose sum is σ = 25343539200. Its totient is φ = 1850445312.

The previous prime is 7680929843. The next prime is 7680929891. The reversal of 7680929880 is 889290867.

It is a self number, because there is not a number n which added to its sum of digits gives 7680929880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20941 + ... + 125699.

It is an arithmetic number, because the mean of its divisors is an integer number (197996400).

Almost surely, 27680929880 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 7680929880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12671769600).

7680929880 is an abundant number, since it is smaller than the sum of its proper divisors (17662609320).

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

7680929880 is a wasteful number, since it uses less digits than its factorization.

7680929880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104833 (or 104829 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 57.

The square root of 7680929880 is about 87640.9144178676. The cubic root of 7680929880 is about 1973.0492840732.

The spelling of 7680929880 in words is "seven billion, six hundred eighty million, nine hundred twenty-nine thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 47 52 60 65 78 94 104 120 130 141 156 188 195 235 260 282 312 376 390 470 520 564 611 705 780 940 1128 1222 1410 1560 1833 1880 2444 2820 3055 3666 4888 5640 6110 7332 9165 12220 14664 18330 24440 36660 73320 104759 209518 314277 419036 523795 628554 838072 1047590 1257108 1361867 1571385 2095180 2514216 2723734 3142770 4085601 4190360 4923673 5447468 6285540 6809335 8171202 9847346 10894936 12571080 13618670 14771019 16342404 19694692 20428005 24618365 27237340 29542038 32684808 39389384 40856010 49236730 54474680 59084076 64007749 73855095 81712020 98473460 118168152 128015498 147710190 163424040 192023247 196946920 256030996 295420380 320038745 384046494 512061992 590840760 640077490 768092988 960116235 1280154980 1536185976 1920232470 2560309960 3840464940 7680929880