Search a number
-
+
8253791680 = 2651071931249
BaseRepresentation
bin1111010111111011…
…01101110111000000
3210022012222001122011
413223331231313000
5113400432313210
63443003222304
7411352033411
oct75375556700
923265861564
108253791680
113556060942
121724217994
13a16cb2604
1458428d808
1533492cd8a
hex1ebf6ddc0

8253791680 has 112 divisors (see below), whose sum is σ = 19956780000. Its totient is φ = 3251109888.

The previous prime is 8253791671. The next prime is 8253791681. The reversal of 8253791680 is 861973528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8253791681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6607696 + ... + 6608944.

Almost surely, 28253791680 is an apocalyptic number.

8253791680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8253791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9978390000).

8253791680 is an abundant number, since it is smaller than the sum of its proper divisors (11702988320).

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

8253791680 is a wasteful number, since it uses less digits than its factorization.

8253791680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 8253791680 is about 90850.3807366816. The cubic root of 8253791680 is about 2020.9295202520.

The spelling of 8253791680 in words is "eight billion, two hundred fifty-three million, seven hundred ninety-one thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 107 160 193 214 320 386 428 535 772 856 965 1070 1249 1544 1712 1930 2140 2498 3088 3424 3860 4280 4996 6176 6245 6848 7720 8560 9992 12352 12490 15440 17120 19984 20651 24980 30880 34240 39968 41302 49960 61760 79936 82604 99920 103255 133643 165208 199840 206510 241057 267286 330416 399680 413020 482114 534572 660832 668215 826040 964228 1069144 1205285 1321664 1336430 1652080 1928456 2138288 2410570 2672860 3304160 3856912 4276576 4821140 5345720 6608320 7713824 8553152 9642280 10691440 15427648 19284560 21382880 25793099 38569120 42765760 51586198 77138240 103172396 128965495 206344792 257930990 412689584 515861980 825379168 1031723960 1650758336 2063447920 4126895840 8253791680